Three gang members have been found guilty of killing two Southern California teens and injuring two others during a 2011 shooting near an apartment complex playground.

The San Bernardino County district attorney's office says a jury convicted the men of two counts each of murder and three each of attempted murder. The verdict was read Tuesday.

The defendants were accused of killing 18-year-old Andrew Jackson and 17-year-old Quinn McCaleb as they walked with a group of teenagers in Redlands. Two other teens were shot but survived their injuries.

Authorities say one of the gunmen was seeking revenge after he was jumped by several men, and attacked the victims in a case of mistaken identity. The victims had no gang ties or prior contact with the defendants' gang.