The highest court in Massachusetts has formally approved the dismissal of more than 21,000 drug convictions that were tainted by the misconduct of a former state drug lab chemist.

The American Civil Liberties Union of Massachusetts says the final order from the Supreme Judicial Court on Thursday marks the single largest dismissal of convictions in U.S. history.

The action by the court was expected after seven district attorneys in eastern Massachusetts submitted lists on Tuesday totaling 21,587 cases they would be unwilling or unable to prosecute if new trials were ordered.

The cases were called into question when chemist Annie Dookhan was charged with tampering with evidence and falsifying drug tests. Dookhan pleaded guilty to perjury and other charges in 2013 and served a three-year prison sentence.

White officer headed to court ahead of civil rights trial

A white former South Carolina police officer charged in the death of an unarmed black motorist is expected in court as his federal trial approaches.

A motions hearing is scheduled Friday in the case against 35-year-old Michael Slager.

Slager's federal civil rights trial in the death of 50-year-old Walter Scott starts next month. Another hearing is scheduled for Monday, when attorneys will discuss the admission of certain experts to testify.

Last month, a federal judge ruled prosecutors may show jurors video of the former North Charleston officer shooting Scott. The bystander's cellphone video was viewed millions of times around the world.

Slager also faces murder charges in state court, where his first trial ended in a hung jury. His retrial is scheduled for August.

Arkansas' attempt to carry out its first execution in nearly 12 years wasn't thwarted by the type of liberal activist judge Republicans regularly bemoan here, but instead by a state Supreme Court that's been the focus of expensive campaigns by conservative groups to reshape the judiciary.

The court voted Wednesday to halt the execution of an inmate facing lethal injection Thursday night, two days after justices stayed the executions of two other inmates. The series of 4-3 decisions blocking the start of what had been an unprecedented plan to execute eight men in 11 days were only the latest in recent years preventing this deeply Republican state from resuming capital punishment.

The possibility that justices could continue sparing the lives of the remaining killers scheduled to die this month has left death penalty supporters including Republican Gov. Asa Hutchinson frustrated and critical of the high court.

"I know the families of the victims are anxious for a clear-cut explanation from the majority as to how they came to this conclusion and how there appears to be no end to the court's review," Hutchinson said in a statement after the Wednesday ruling.

Since the last execution in 2005, the state Supreme Court has at least twice forced Arkansas to rewrite its death penalty law. One of those cases spared Don Davis, who again received a stay Monday night. The legal setbacks at one point prompted the state's previous attorney general, Dustin McDaniel, to declare Arkansas' death penalty system "broken."

But unlike the earlier decisions, this stay came from a court that had shifted to the right in recent elections. Outside groups and the candidates spent more than $1.6 million last year on a pair of high court races that were among the most fiercely fought judicial campaigns in the state's history. Arkansas was among a number of states where conservative groups spent millions on such efforts.

The New Hampshire Supreme Court says members of a former Dartmouth College fraternity aren't allowed to live in their house after the college banned the frat from campus.

The Hanover zoning board revoked the $1.4 million Alpha Delta house's status as a student residence when the fraternity was de-recognized for burning brands into the skin of new members in 2015.

Zoning rules require that such residences operate "in conjunction with" an institution, such as the college. Alpha Delta argued it should be considered "grandfathered" under an older zoning ordinance, but the court on Tuesday rejected that argument.

Alpha Delta had been a fraternity at Dartmouth since the 1840s, and since 1920 has housed 18-22 students. It partially served as the inspiration for the 1978 movie "Animal House."

Turkish protesters on Monday demanded the death penalty, abolished in Turkey more than a decade ago, for 18 alleged coup plotters on trial for the killing of a military officer who resisted an effort to overthrow the government.

The demonstrators jeered as security forces escorted the defendants into a courthouse in the Turkish capital, Ankara. The crowd also displayed an effigy of Fethullah Gulen, an Islamic cleric based in Pennsylvania who is blamed by Turkey for the failed coup attempt on July 15. The effigy had a noose around its neck. Gulen has denied involvement in the uprising.

Turkey abolished the death penalty as a campaign to join the European Union gained momentum, but President Recep Tayyip Erdogan has said since the coup attempt that Turkey could hold a referendum on reinstating it if parliament fails to pass such a measure. European leaders say any talks on Turkey's bid to join the EU, which faltered years ago, would end if Ankara restores the death penalty.

Relations reached a new low this month because of Turkey's anger over the refusal of some European countries to let Turkish Cabinet ministers campaign for diaspora votes ahead of an April 16 constitutional referendum on increasing the powers of the Turkish president. Supporters of the measure say a more centralized leadership would help Turkey deal with security, economic and other challenges; critics say its approval would fit a pattern of increasingly authoritarian behavior by Erdogan.

The suspects who appeared in court in Ankara are accused of involvement in the shooting of Omer Halisdemir, an officer who was killed after he shot dead Semih Terzi, a renegade military commander who allegedly tried to take over the special forces headquarters in the capital during last year's uprising by some military units.

Suspect Ahmet Kara, who was Terzi's military aide, testified last month that he was duped into participating in the rogue operation without understanding that it was an attempt to overthrow the government. The defendants, whose trial began in February, face life imprisonment if convicted of murder and other crimes.

Turkish protesters on Monday demanded the death penalty, abolished in Turkey more than a decade ago, for 18 alleged coup plotters on trial for the killing of a military officer who resisted an effort to overthrow the government.

The demonstrators jeered as security forces escorted the defendants into a courthouse in the Turkish capital, Ankara. The crowd also displayed an effigy of Fethullah Gulen, an Islamic cleric based in Pennsylvania who is blamed by Turkey for the failed coup attempt on July 15. The effigy had a noose around its neck. Gulen has denied involvement in the uprising.

Turkey abolished the death penalty as a campaign to join the European Union gained momentum, but President Recep Tayyip Erdogan has said since the coup attempt that Turkey could hold a referendum on reinstating it if parliament fails to pass such a measure. European leaders say any talks on Turkey's bid to join the EU, which faltered years ago, would end if Ankara restores the death penalty.

Relations reached a new low this month because of Turkey's anger over the refusal of some European countries to let Turkish Cabinet ministers campaign for diaspora votes ahead of an April 16 constitutional referendum on increasing the powers of the Turkish president. Supporters of the measure say a more centralized leadership would help Turkey deal with security, economic and other challenges; critics say its approval would fit a pattern of increasingly authoritarian behavior by Erdogan.

The suspects who appeared in court in Ankara are accused of involvement in the shooting of Omer Halisdemir, an officer who was killed after he shot dead Semih Terzi, a renegade military commander who allegedly tried to take over the special forces headquarters in the capital during last year's uprising by some military units.

Suspect Ahmet Kara, who was Terzi's military aide, testified last month that he was duped into participating in the rogue operation without understanding that it was an attempt to overthrow the government. The defendants, whose trial began in February, face life imprisonment if convicted of murder and other crimes.

The Supreme Court will hear a case in which people arrested for having a party in a vacant house sued police for violating their constitutional rights and won.

The justices said Thursday they will review lower court rulings in favor of 16 people who gathered in a house in Washington about three miles east of the nation's Capitol for a party.

Police arrested the group after no one could identify whose house it was, some said it was a birthday party and others said it was a bachelor party. No one could identify the guest of honor. Several women were scantily clad, with money hanging out of their garter belts. The officers said that the scene resembled a strip club, according to court papers.

Several of the partygoers said someone named "Peaches" gave them permission to have the party.

But when an officer later contacted the purported owner of the home, he denied having given anyone permission to have a party.

The group was arrested for trespassing, a charge later changed to disorderly conduct and then dropped altogether. But the 16 people sued for false arrest and were awarded $680,000.

The issue for the court is whether the officers had sufficient reason to arrest the group for trespassing. The court also will determine whether the officers should be shielded from liability even if their actions are found to violate the law.

A panel of the federal appeals court in Washington upheld the judgment, but four other judges on the court said that the officers should have been protected, citing a string of Supreme Court decisions.