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... A Florida man fatally shot his wife, critically wounded his stepdaughter and then killed himself after the parents argued over changing the channel from "Monday Night Football," authorities said.

Jason Kenney, 47, had been watching his favorite team, the San Francisco 49ers, beat the Indianapolis Colts when his 38-year-old wife, Crystal Kenney, "told him that she did not want to watch football" anymore, according to a statement from the Polk County Sheriff's Office.

Jason Kenney had "been drinking during the evening" in Lakeland, and at about 11 p.m., with the game well in hand for San Francisco, "an argument began when Crystal Kenney suggested they watch something else on television and the argument got really heated," Sheriff Grady Judd told reporters.

Crystal Kenney told her son, 12, to go to a neighbor to call 911, and as the boy was "leaving the house, he hears a gunshot," Grady added.

Responding deputies found Crystal Kenney's body and her critically wounded 13-year-old daughter, officials said. Deputies also found the couple's baby girl asleep in her crib, unharmed. ...