Lawyers will argue Wednesday whether a man accused of pushing his wife off a cliff to her death in Colorado's Rocky Mountain National Park as they celebrated their wedding anniversary should remain in jail.

The federal detention hearing comes after Harold Henthorn, 58, was indicted last week on a charge of first-degree murder in the death of Toni Henthorn, 50.

An autopsy report says she fell or was pushed over the ledge when she paused to take a photo during a hike on Sept. 29, 2012. The couple was visiting the park for their 12th wedding anniversary.

Only after her death did Toni Henthorn's relatives realize she was covered by three life insurance policies totaling $4.5 million. A claim was sent in for one policy days after she died, court records show.

Harold Henthorn's attorney, Craig L. Truman, has said that the case is complicated and that "justice will be done" once the facts come to light.