There is a murder mystery in Pennsylvania after a Union County man was found dead along a highway in Harrisburg.

Tyrone Shaw, 46, lived at the Hedgewood Garden Apartments in Roselle Park. Neighbors tell News 12 New Jersey that Roselle Park police and Pennsylvania State Police were at the apartment Tuesday as part of the investigation.

Bill Bevilacqua lives next door to Shaw. He says that police questioned him and other neighbors.

“They were in there to question us today, to see if we knew anything. We didn’t see anything or hear anything,” he says.

Officials say that Shaw was found shot to death along Interstate-81 Monday evening. Shaw was shot once in the head and found next to his 2004 Yukon. Police say that he was targeted.

Police initially believed that the shooting was related to a road rage incident that occurred in the area. But officials now say that the two crimes are not related.

Authorities are now asking for anyone in the public who may have dashboard camera footage of the area to come forward.

“I do hope they find out what happened. He didn’t seem like he was any trouble. The guy, he seemed like a decent guy,” Bevilacqua says.

Neighbors say Shaw lived on the third floor of this building with his mother.

Pennsylvania authorities are asking anyone who may have information about the murder to call 1-800-4PA-TIPS.