A body has been pulled out of the Marquette Park lagoon. The body has not been identified.

The body pulled from the Marquette Park lagoon on Chicago's Southwest Side last week was a 14-year-old boy who had been missing since March, according to authorities.

Police and the Cook County medical examiner's office initially said the person found in the lagoon was a man in his 20s.

He has since been identified as Julius Campbell, 14, of the 5900 block of South Artesian Avenue in the Chicago Lawn neighborhood, according to a spokeswoman for the medical examiner's office.

Julius' mother, Christina Campbell, said her son was an artist who also enjoyed participating in Junior ROTC. Campbell said she knew something was wrong as soon as the Gage Park High School freshman didn't come home last month.

"This was out of the norm for my child," she said. "He'd never done this before. I was telling everybody that something was wrong, something was wrong. ... He calls me when he's going to be late. He was just one of those kids who followed the rules of the house."

She described Julius as kindhearted and hardworking. She said she had no idea who might have killed him.

"He was just a real inspirational child, and he brought smiles to a lot of people's faces," she said.

The Marquette Park lagoon, 6743 S. Kedzie Ave., is about 2 miles from where the boy lived.

Police were called to the lagoon on the morning of April 12 to attempt a recovery. An autopsy the next day showed that Julius died of multiple stab wounds.

His death was ruled a homicide.

Chicago police had issued a missing person news alert for the boy March 10 that said he had last been seen March 7 near Gage Park High School, 5630 S. Rockwell St.

pnickeas@tribune.com

Twitter @peternickeas