Police are frantically searching for an autistic 9-year-old girl who likely wandered into the Red Hook Channel in Brooklyn Wednesday night, according to law enforcement sources.

The nonverbal girl was last seen wearing a black shirt, blue shorts and orange Crocs inside the Ikea store at 1 Beard St. just before 9 p.m., police said.

Surveillance footage captured her walking out of the rear of the store toward the Erie Basin.

Though there has been no sign of the girl, both of her orange Crocs were recovered from the water.

NYPD divers are searching for the girl in the channel waters.

This is a developing story. Please check back for updates.