MONTEREY PARK, Calif.—Authorities Sunday, July 21, continued seeking the public’s help to find a 15-year-old girl who went missing around one week ago in Monterey Park.

Alison Jillian Chao was last seen about 6:20 p.m. Tuesday in the 4400 block of Collis Avenue in the El Sereno area of Los Angeles, according to the Monterey Park Police Department.

Alison is Asian, 5 feet, 2 inches tall, weighs around 95 pounds, and has black hair and brown eyes. She was last seen wearing a purple T-shirt, black shorts and dark shoes. She was riding a blue mountain bike and carrying a black backpack.

“MPPD detectives, in cooperation with our local, county, state and federal partner agencies have been investigating this case continuously since Alison was reported missing. We continue to work with the Alison family and are canvassing neighborhoods in the area, reviewing surveillance video footage and interviewing possible witnesses,” police reported.

Authorities urged anyone with information regarding Alison’s whereabouts to contact the MPPD at 626-573-1311.