KINGS PARK - Rescue crews are scouring near the Nissequogue River in Smithtown Bay in search of a kayaker who went overboard this afternoon.

The Suffolk Police Marine Unit, the U.S. Coast Guard and a rescue helicopter crew are leading a joint effort to find 41-year-old veteran NYPD officer Patrick Luca, of Smithtown, who disappeared at around 3 p.m.

Officials say Luca's 5-year-old son was pulled to safety from Smithtown Bay, where he was spotted by a private fishing boat. He was wearing a life jacket and is expected to be OK.

Officials say the child told them that he saw how his father slipped into the water from their inflatable kayak and did not resurface.

Local residents say the currents in Nissequogue River are extremely strong.

To watch Chopper 12 footage of the water search, tune to channel 612 on your iO digital cable box and select iO Extra. fatal hit-and-run at Pine St. and Wordin Ave.