The reward was announced Thursday and says the agency has extended its search for Arnaldo Jimenez into Mexico.
Jimenez married Estrella Carrera in Chicago on May 11. She was found stabbed to death in a Burbank apartment just hours after the ceremony.
Jimenez hasn't been seen since. Investigators say they have gotten more than 450 tips on his whereabouts. They are concentrating their search in the Mexican state of Durango.