A third wrongful-death suit was filed Tuesday over the Gulf of Mexico oil rig explosion, this one involving a crane operator from Mississippi who was on deck relieving another operator when the blast occurred.

The suit, Kritzer v. Transocean Ltd., was filed in state court in Galveston County, Texas, on behalf of the family of Aaron Dale Burkeen, one of 11 men still missing after the April 20 explosion. According to the complaint, witnesses saw Burkeen try to escape down some stairs when the first explosion occurred. He is believed to have died in the second blast.