Riverside police are asking the public to help them identify an apparently mentally challenged Chicago man who told cops he walked away from his home on Sept. 9 and can’t remember where he lives.

A custodian at Hauser Junior High School in Riverside called police at about 9:45 a.m.  on Sept. 10 to report a man wandering around the rear parking lot of the school. The man, who is Latino and looks to be in his 40s, was found wearing a navy blue zip-up hooded sweatshirt, brown pants and black gym shoes. He is between 5-foot 8 and 5-foot-10 and weighs between 175 and 180 pounds, according to police. He speaks no English and was carrying no identification.

Through a Spanish interpreter, he told police his name was Angel Valle, but police Chief Thomas Weitzel said he’s not certain that the name is accurate. The man also didn’t know his birthdate.

Weitzel said the man told the translator he lives with an uncle near Albany Avenue and Cermak Road in Chicago, and that he left home on Sept. 9 to attend the Mexican Independence Day parade on 26th Street in Little Village.

After the parade, the man said he started walking and can’t recall how he ended up in Riverside.

Weitzel said that the man showed no signs of intoxication, but did appear mentally challenged.

At 11:45 a.m. on Monday police transported the man to MacNeal Hospital in Berwyn, where he remains.

According to Weitzel, Riverside police issued a bulletin about the man to all law enforcement agencies in Chicago, Cook County and DuPage County but have received no responses.

Riverside police also contracted Chicago’s 10th Police District, in which the man reportedly lives, but that agency had no missing persons reports matching the man’s description. A fingerprint check also came back negative.

“We have no leads,” said Weitzel. “We have no idea who he is.”

Anyone with information is asked to call the Riverside Police department at 708-447-2127 or email Lt. Bill Legg at blegg@riverside.il.us.