Cops are investigating whether an arm and legs found near a Queens shoreline Thursday are those of missing teen Avonte Oquendo, a police source said. The human limbs were found near Powell's Cove Blvd. and Endeavor Place in College Point about 7 p.m., police sources said. A sneaker also was found, sources added, but they could not say whether it belongs to the autistic 14-year-old boy, who went missing more than three months ago.

"The concern is obvious,” a police source said. “When you have body parts, there’s the obvious question about what happened. Was there a murder, or a drowning with bad decomposition?"

Avonte, who is nonverbal, has been the subject of massive searches since he was last seen Oct. 4 walking past a security guard and out of the Riverview School in Long Island City.