Philadelphia police have charged an alleged drug dealer with killing an Olney man last fall.

Lamont Chyanne Blount, 22, of Rush Street near 13th, was charged with murder and gun offenses in the Oct. 16 death of Gregory Simmons, 37, of Mascher Street near Nedro Avenue, said Officer Christine O'Brien, a police spokeswoman. Police responding to a report of a shooting found Simmons in a bedroom of his home, suffering from gunshot wounds to the head, just after 2:15 p.m., O'Brien said.

Blount already was in prison after federal authorities arrested him in January for his role in a drug ring that supplied cocaine and heroin to Williamsport and Tioga and Lycoming counties in 2012 and 2013. In that case, he was indicted along with five other men from Philadelphia and Williamsport. The men, who were known as the "Tat-Gang," also allegedly bought, sold and traded firearms, according to the indictment.

Blount also has several prior arrests for gun offenses, and Simmons has prior drug and weapons arrests, court records show.