A man died after suffering critical injuries when he was hit by a car while crossing a North Long Beach street in violation of a “Don’t Walk” signal early Saturday morning, authorities said.

The Long Beach Police Department learned of the man’s death Monday. Police only identified the deceased man as a 59-year-old Long Beach resident.

Police officers and Long Beach Fire Department paramedics responded to the scene after a report came in about 1:10 a.m. Saturday of a man struck by a car in the intersection of Market Street and Atlantic Avenue. The man was unconscious and lying in the roadway when officers arrived, according to police. Paramedics transported the injured man to a hospital, a press release said.

Witnesses provided information to police leading the department to report Monday that a Nissan Altima traveling northbound on Atlantic Avenue hit a pedestrian who was crossing the street despite the “Don’t Walk” signal at the time. The driver, a 20-year-old Long Beach man, stopped his car and attempted to help the injured pedestrian, the release said.

Long Beach traffic investigators are still investigating. Anyone with information is asked to call collision investigation Detective Steve Fox at 562-570-7355.

Witnesses may also provide anonymous tips via LA Crime Stoppers by calling 800-222-TIPS (8477) or using the P3 Tips mobile app that may be used on Apple or Android devices or by going online to www.lacrimestoppers.org.