Police believe the victims were targeted, and that it was possibly the result of a love triangle

By Harriet Sokmensuer
Updated November 10, 2015 05:25 PM

Philadelphia police are investigating a double homicide in Fairmount Park on Friday that cops believe might be the result of a love triangle, police tell PEOPLE.

In a press release, cops said that Arline Shakoor, 25, and Lisa Smith, 32, were having a sexual encounter in the back of a white SUV when they were shot nine times. Before they died, both Shakoor and Smith were in relationships with other people, police say.

Shakoor and Smith had been in an on-and-off relationship for several years after meeting at a previous job, police say.

In a press conference on Sunday, Homicide Captain James Clark described the murder as a “crime of passion.”

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Cops believe the gunman followed the victims to the park. “It was a targeted attack,” Officer Leeloni Palmiero tells PEOPLE.

Police tell PEOPLE the shooting allegedly took place late Thursday night early Friday morning. Maintenance crews discovered the bodies Friday around 3 p.m.

Police found fingerprints inside and outside the vehicle but do not know who they belong to. They have successfully made contact with Shakoor s girlfriend but haven t been able to track down Smith s boyfriend.

“He s not a person of interest or a suspect,” Palmiero says. “But we re having trouble reaching him.”

Authorities are asking the public to help find the killer. Anyone with information is urged to call the homicide division at 215-686-3334.