Kevin Kwok told his mother he would be in the basement gym of their apartment building. (Family photo/Toronto Police Service)Police are searching for an autistic teen reported missing from his home in Scarborough since 9 p.m. ET Saturday.

Kevin Kwok, 17, told his mother he was going to the gym in the basement of their highrise apartment building at 138 Bonis Ave., in the Sheppard Avenue E. and Birchmount Road area.

He hasn't been seen since and police were still searching for him as of 4:45 p.m. ET on Sunday.

Kevin's mother, Ivy Ang, said her son has never wandered from home before. She said he likes Facebook and tries to meet friends on the social networking website.

"He wants to meet friends," Ang told CBC's Kimberly Gale on Sunday morning. "But he doesn't know how because he has poor social skills because he's autistic. He might be following what people say. He might get into someone's car."

Kevin is described as five foot five, or five foot six inches tall and130 pounds. He was last seen wearing an orange Adidas T-shirt and dark shorts with red and white stripes.

Ang said police are knocking on doors in the apartment building and showing Kevin's photo to neighbours.

With files from CBC's Kimberly Gale