CHICAGO (CBS) — A man is fighting for his life, after being shot inside an Englewood neighborhood White Castle restaurant.

The gunman remains on the loose.

LISTEN: Newsradio 780’s Bernie Tafoya reports.

The shooting happened at 12:30 a.m. at the White Castle at 6646 S. Halsted St., when a gunman outside the restaurant shot at four men inside, striking one in the head, according to police. No one else was hurt.

The 18-year-old victim was taken to Stroger Hospital of Cook County in serious condition, police News Affairs Officer Amina Greer said.

The incident was likely narcotics-related and the gunman was not in custody at 3:30 a.m., police said.

The White Castle open 24 hours.

The Sun-Times Media Wire contributed to this report.

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