Investigators say a fight over doughnuts Wednesday led a man to kill his mother's fiancé and wound a Florida sheriff's deputy.

Pinellas County Sheriff Bob Gualtieri told the Associated Press the incident began when 24-year-old Jeffrey Falsey asked his mother to get him doughnuts. When Susan DiFabbio refused, her son became angry. She called for help.

Gualtieri says shots rang out after deputies arrived. Two hours later, negotiators persuaded Falsey to leave the home. Inside they found 68-year-old Daniel Kulwicki dead. Deputy Michael Ficocelli was shot in the leg.