The ambush late Thursday night is yet another cause for concern among members of law enforcement across the country.
Archer's mother has indicated that he is mentally ill and Ross said investigators do not know yet if the suspect was indeed radicalized or tied to terrorism.
Philadelphia's police commissioner told reporters the confessed shooter's gun belonged to a police officer and was reported stolen in 2013.
"That is abhorrent", Philadelphia Mayor Jim Kenney said at the press conference, reports The Daily Caller.
"My brother in law, a police officer in West Philadelphia, was shot at 13 times point blank while sitting in his patrol auto at a red light last night ..." Ross says the suspect, Edward Archer, 30, of Yeadon, has given a full confession, saying he did it in the name of Islam.
"We need more information", Bender said. "Where's it going to lead us, if anywhere?'"
Ross said their was no apparent motive for the attack. She also said he was a devout Muslim.
FOX 29 crews were there as investigators searched one of Archer's listed addresses.
Officer Hartnett was able to return fire and hit the suspect, who ran away. The suspect was wounded and arrested by other officers.
Ross says the shooting was unprovoked.
Philadelphia Police Captain James Clark noted that the 30-year-old suspect had pledged allegiance to the militant group.
Philadelphia court records show he was convicted of assault in March and was set to begin a prison term. A message to his lawyer in the forgery case was not immediately returned.
"Why someone would do something so absolutely evil is just beyond us", Ross said.
Officer Jesse Hartnett, 33, was taken to Penn Presbyterian Hospital after being hit by three bullets and will require several surgeries. Hartnett shouts in a recording of his radio call for backup.
"It's nothing short of miraculous and we're thankful for that", he said.
Hartnett was in good spirits, said his father, Robert Hartnett.
"He's a tough guy", he said.
Hartnett is an officer in the 18th district and has been in the force for five years. But ISIS has released videos urging followers to kill police officers in the past.
Officer Hartnett not only survived the shooting, he chased Archer and got off a shot that must have slowed him down.
Echoing statements by Kenney and other officials, Bender said: "This should not be seen as representative of Muslims or the faith of Islam".