A 19-year-old man was found shot to death in a driveway in Milton on Tuesday night, police said.

Christopher Walker was shot once in the head, Milton police spokesman Capt. Shawn McCarty said.

Authorities were called to a home on Silhouette Court in a neighborhood off Deerfield Parkway around 7:30 p.m., where they found Walker, McCarty said.

Walker was transported to North Fulton Hospital in Roswell, where he died.

Detectives were continuing to collect evidence late Tuesday.

“There’s more to it than just the shooting,” McCarty told Channel 2 Action News.

Police do not yet have a motive for the shooting or any suspects, McCarty said.

Milton Police say the death is the seventh murder in the city’s six-year history.

The investigation continues.

— Staff reporter Marcus K. Garner contributed to this article.