A Philly ex-cop once convicted for shooting a man he found in his ex-wife's bed has been charged in an April  2014 murder involving his ex-girlfriend.

David Wade Howard, 51, of Willow Grove, was charged yesterday with terroristic threats and intimidation in the Easter Sunday slaying of William Blount, 49, of Tacony Street near Margaret in Frankford, police said. Police on March 12 had charged Howard's ex-girlfriend Alisa Davis, 38, with murdering Blount, who was found outside her North Philly home on 18th Street near Westmoreland, slumped over behind the wheel of a green 2000 Plymouth Voyager, Little said. Blount had been shot in the head.

Despite Davis' arrest as the alleged killer, Howard is "actively being investigated for further involvement in the murder of William Blount," police spokeswoman Officer Tanya Little said.

Howard, a 13-year officer, was fired in 2004 after he was charged with using his 9-mm service weapon to shoot a man he found in his ex-wife's bed in Williamsport in February 2004. The man survived but was critically injured. Howard was convicted in 2005 and sentenced to 5 1/2 to 12 years in prison for that crime, according to court records.