PHILADELPHIA (CBS) —  A man who was shot in the head Monday night while getting groceries out of his truck in the Spring Garden section of Philadelphia has died.

Police say 45-year-old Sean Perrin had just returned home from the grocery store when a gunman opened fire on him.

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The incident happened around 7 p.m. in the 400 block of North 4th Street.

Philadelphia police are still searching for the gunman.

Credit: CBS3

“We believe he just returned home from shopping when he was shot,” said Philadelphia Chief Inspector Scott Small.

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The victim was transported to an area hospital where he died around 2 a.m.

No arrests have been made. Authorities don’t believe this was a random shooting.

Small believes the shooter fled on foot and got into a white sedan that has a sunroof.

There’s no motive for the shooting at this time, but Small adds that it appears the shooter was lying in wait for the victim.

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Anyone with any information is asked to call police at 215-686-TIPS.