LAWNCREST (WPVI) -- A Philadelphia man has been charged in a February 2014 execution-style triple murder, District Attorney Seth Williams announced Thursday.Williams said 24-year-old Quadir Jeffries shot and killed Keurlin Charles, Brian Williams and Vagner Freemont.All three were shot in the head inside Charles' home on the 6300 block of Martins Mill Road in Lawncrest.Jeffries, who is currently in jail for a previous home invasion, has also been charged with three counts of Robbery, one count of Burglary, one count of Possession of an Instrument of Crime, one count of Carrying Firearm without a License, one count of Carrying a Firearm on the Public Streets and one count of Conspiracy.Investigators say Jeffries and accomplice Cori Thompson were looking for a large amount of cash and a drug dealer's stash of marijuana.Thompson was arrested in October 2015 in connection to this case after providing a statement to police.The D.A. says cartridge cases helped lead authorities to Jeffries.Jeffries had been convicted in a nonfatal shooting home invasion 26 days earlier, and the fired cartridge case at that location matched the cases at the triple murder scene.The D.A. also says cell phone information put Jeffries at the scene and he had used Brian Williams' bank card after the murder.In December 2015, Jeffries, Alonzo Wallace and Hakim Blatch were found guilty in a violent home invasion robbery that took place in the Hunting Park section of the city.Authorities say Jeffries, Wallace and Blatch conspired to rob a 57-year-old man.They followed the victim to his house and pistol whipped and stomped him in the face.Investigators say another person who was in the home at the time of the attack was shot by Wallace.Jeffries, Wallace and Blatch took money and marijuana from the home and fled, but were eventually caught.Wallace was sentenced to 30 to 60 years, Blatch was sentenced to 23 to 46 years, and Jeffries 20 to 40 years.Jeffries will next appear in court for his Preliminary Hearing.