The body of a Jersey City man who went missing inside a flooded, debris-filled old mine north of New York City has been recovered.

Putnam County sheriff's deputies say Robert Thomas, 49, went missing in the waters at the Tilly Foster Mine on Sunday. His body was found around 1 p.m. Monday.

A state police dive team used sonar and camera equipment to find Thomas's body at a depth of about 171 feet.

Preliminary reports indicate that Thomas, an experienced diver, may have become entangled in wires or cables on the bottom of the flooded mine shaft.

The Tilly Foster Mine was an iron mine in the 1800s that was nearly 600 feet deep in its heyday.

It is littered with wrecked cars and trucks, old mining equipment and other debris. Reports say it was flooded after a major collapse in 1895 killed 13 miners.