Berks County Sheriff Deputy Kyle Pagerly's accused killer is dead, but state police and the district attorney haven't stopped their investigation.
The big question remains, how did Matthew Connor get his gun?
D.A. John Adams said top priority in the investigation is finding out who gave Connor, 25, the AK-47 assault rifle used in Wednesday night's deadly encounter with Pagerly in Albany Township.
"We want to find out how he got that weapon, who gave him that weapon," said Adams.
Connor was also killed in the shootout. Investigators said he was found with two guns on him at the scene.
"I'm certain that there's someone out there in his network of friends and associates that probably does have information as to how he obtained that gun," said Adams, who added that the accused killer was ineligible to posses a firearm because of a prior felony conviction.
According to police records, Connor has had many run-ins with the law since 2000, ranging from smoking violations, harassment, burglaries, speeding and assault.
69 News spoke with Maurice Connor, father of Matthew Connor, on Thursday.
Maurice Connor, a retired police officer, said his troubled son took a pistol from him on Monday and used it to threaten him and Matthew Connor's sister.
Investigators said Connor's father gave them a suicide note that was written by the accused killer.
Investigators also said they may never know whether Connor wanted to die in a shootout with police. At the time of Wednesday's altercation, investigators said Connor was dressed in full camouflage, face mask and gloves. He was also carrying two guns, two knives and ammunition.
"He had a history of mental illness," said Adams. "So, this is the last person in the world that should be possessing that type of a weapon."
Adams said there are criminal charges associated with providing a firearm to a convicted felon.
Officials are asking anyone with any information to contact State Police or Crime Alert Berks County. Crime Alert's toll-free number is 877-373-9913. Callers don't need to give their name and are eligible for a cash reward of up to $5,000 if their information leads to an arrest.