According to authorities, the two escaped the prison by creating a hole in the perimeter fence.
Riddick is expected to face murder charges.
The police have yet to make any arrests or find any weapons related to the incident.
Pfeffer was taken into custody using the fallen officer's handcuffs.
Police used the fallen officer’s handcuffs in placing the suspect under arrest.
Christopher is the son of a prominent police official, Joel Fitzgerald, who spent 17 years with the Philadelphia Police Department.
32-year-old Giovanni Maysonet, a 5-year veteran of the force.
Philadelphia police identified one of the suspects charged in an officer's shooting.
The officer's condition was not yet known.
Police say a 15-year-old male was shot at 61st and Jefferson streets prompting a lockdown at nearby Overbook High School.
According to the police, a quadruple shooting that took place in Northeast Philadelphia resulted in the deaths of three people.
John Flood, a 28-year veteran of the PFD who passed away today from occupational cancer.
At the FedEx distribution facility close to Philadelphia International Airport in Tinicum, Pennsylvania on Friday in the late afternoon, a person was shot and killed.
Blood was found in the parking lot of Roxborough High School in Philadelphia following the shooting, which left four people injured, including a teenager.
A social media post made by Stephanie Sibounheuang could have helped a potential assailant find PnB Rock at Roscoe's House of Chicken 'N Waffles in Los...
PnB Rock, an American rapper and singer, was shot in Los Angeles as he was dining out. There is a disturbing video doing the rounds on...
Over the Labor Day weekend in the United States, there were 15 separate shooting incidents that resulted in the deaths of more than a dozen people...
Police said that a drive-by shooting occurred near the Shepard Recreation Center on 57th Street and Haverford Avenue in the Haddington neighborhood, and that it resulted...
Dozens of shots were fired outside the Popeyes at North 4th Street and West Lehigh Avenue late Monday night
Police have confirmed that a concertgoer Hugo Sanchez died after falling from an escalator and getting serious head injuries. He fell 40 feet to his death.
Firefighters Trapped After Building Collapses in Philadelphia