A woman accused of dumping hot cooking oil on her sleeping husband has been charged with murder, and the FBI has joined the search for her.

Sherman Sanders died Friday after a week in the burn center at the University of South Alabama in Mobile. He had suffered third-degree burns over more than half of his body.

Investigators said his wife, Edna May Sanders, 45, fled their home in Diamondhead with their two children on July 28.

Police believe she heated about two quarts of household cooking oil on the stove, allowing it to reach a simmer before pouring it over her husband’s head chest and arms.