ROMEO HAS BEEN FOUND. CLICK HERE FOR THE UPDATED STORY.

An 8-year-old autistic boy went missing Saturday evening when he boarded a subway car and the doors closed before his siblings could join him.

Romeo Richardson, who has limited ability to speak, boarded the 5 train in the Bronx at about 7 p.m. for a trip to Coney Island, his family said. The subway car door closed, leaving behind his 13-year-old brother, 9-year-old sister and 7-year-old cousin.

As of 10:30 p.m. Saturday, Romeo was still missing.

His mother was home at the time.

He was wearing blue jeans, boots and a red and black jacket when he was separated from his siblings.