PITTSBURGH -- There are new details about the investigation into the murder of a state trooper.

It is now known that 29-year-old Phillip Andrew Peterson and 28-year-old Jabbar Odell James were passengers in the Mercury Sable.

The vehicle was allegedly driven by 30-year-old Leslie Mollett, the man now charged with the shooting death of Cpl. Joseph Pokorny.

Peterson's attorney told Channel 11 that the three men had been at a nightclub in the strip district Saturday.

The attorney said the three left together and that Peterson thought Mollet was driving him home.

Allegedly they wound up on the Parkway West, and according to the attorney headed to the Extended Stay America hotel, where another acquaintance - 21-year-old Andrew Palmer - had rented a room.

Police later located heroin in the room and arrested and charged Palmer.

According to the criminal complaint filed against Mollet, Pokorny spotted the Mercury Sable speeding on the Parkway West and began a pursuit.

It ended near the hotel parking lot when the driver crashed into the curb.

Peterson told investigators that when the trooper approached the vehicle, Mollett became verbally combative and refused to comply with his request.

Mollett said the trooper began using pepper spray and Mollett grabbed the trooper's arm.

At that time, according to Peterson's attorney, Peterson and James took off on foot.

According to the complaint, Peterson and James heard gunshots as they were fleeing from the scene.

Also according to the complaint, Mollett then called Peterson on a cell phone and said that the officer, "Got three to the head."

Peterson told police he received a second call from Mollett asking him to go back to the scene and retrieve his Glock handgun, but he refused.