ISLIP - Police say the missing teen whose body was found in a marshy area off Brook Street in Islip today was murdered.

Authorities identified the teen as 18-year-old Kyle Underhill.

Investigators say they made the discovery of the body around 9:30 a.m. after Underhill had been missing for about two days.

Anyone with information is asked to call Crime Stoppers at 1-800-220-TIPS.

Police probe teen's 'suspicious' disappearance