CLIFTON, N.J. (CBSNewYork) – Police in New Jersey are trying to determine where a man suffering multiple stab wounds was wounded before he stumbled into a White Castle restaurant and was helped by store employees.

On Saturday around 12:30 a.m., police responded to the restaurant on Main Avenue in Clifton and found a 34-year-old Passaic man in need of medical attention.

He was taken to Saint Joseph’s Regional Medical Center in Paterson and was listed in critical condition.

Anyone with information is urged to contact prosecutors at 1-877-370-PCPO or tips@passaiccountynj.org, or call the Clifton Police Department at 973-470-5900.