The LRPD says a man killed his father and assaulted his mother last night just before midnight, then yelled for responding officers to shoot him before being tased and taken into custody. Sean Patrick Johnson, 30, was arrested at the home he reportedly shared with his parents, Ronald and Hope Johnson, at 11817 Doe Run Drive in Little Rock. According to a police report, Hope Johnson told officers that her son had assaulted her and Ronald Johnson with a knife. Hope Johnson told officers that her husband and son had struggled over the knife, and that during the fight, Sean Johnson had pushed his father down, kicking and hitting him in the head. Ronald Johnson was later pronounced dead at a local hospital