The family of an autistic boy missing for more than three weeks asked for his safe return at a prayer vigil on Sunday.

Avonte Oquendo was last seen on Oct. 4 walking out of a school in Queens.

At the prayer vigil, his family asked that the public continue to look for their 14-year-old son.

The Rev. Phil Craig thanked the New York Police Department for continuing to search for the boy.

Police Commissioner Raymond Kelly said Friday that 80 detectives assigned to the case were reviewing 196 pieces of video and following up on more than 450 leads.

Police have said Avonte was fascinated with trains. Officers searched all subway stations and tunnels and are working with authorities in New Jersey and Long Island in case Avonte got aboard a train leaving the city.

The reward for Avonte's safe return is up to nearly $90,000. Police ask anyone with information to call the police TIPS hot line.

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