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

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

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

The Rev. Phil Craig thanked the NYPD 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.

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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.