File photo.

The death of a man whose unresponsive body was found on the sidewalk near a fire station just north of MacArthur Park in July has been ruled a homicide, and police are asking for the public’s help in identifying the suspect responsible, authorities announced Friday.

The body of 33-year-old Alberto Martinez was located on July 29 around 12:28 a.m. in the 1400 block of Gundry Avenue. Despite attempts by authorities to save his life, Martinez died at the scene.

At the time, authorities said the incident was being investigated as an undetermined death since there wasn’t any obvious evidence of foul play.

However, a few days later, investigators determined the cause of death as a stab wound to the face, according to the Los Angeles County Coroner’s Office.

Detectives are currently in the process of conducting interviews and attempting to locate evidence pertaining to Martinez’s death.

Anyone with information is urged to contact Long Beach detectives at 562-570-7244.

Long Beach police investigate after man found dead near MacArthur Park