Long Island explosion investigated by cops, FBI over concerns it could be prelude to something else

close

Video

Fox News Flash top headlines for November 29

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com.

Authorities in New York's Long Island are investigating a blast that left a crater and was felt miles away Sunday. Police are working with the FBI on the probe, to determine whether it could have been a prelude to something bigger. 

The Suffolk County Police Department said the explosion occurred on Fox Island, off the coast of West Babylon, around 11:40 a.m. when a device was detonated. Authorities received nearly three dozen 911 calls, the department told Fox News. 

An explosion on Fox Island in New York left a crater. Authorities have partnered with the FBI to investigate.  (Suffolk County Police Department)

No injuries were reported. Fox News has reached out to the FBI. 

Investigators are not ruling out the idea that the incident may have been a test run for something bigger, such as a possible terrorist attack. 

"Terrorism is always a concern because people do test devices before using them," a police spokeswoman told Fox News. "The SCPD is investigating with the FBI Joint Terrorism Task Force on this investigation."

Authorities are searching for a boat seen leaving around the time of the blast.  (Suffolk County Police Department)

The blast left a crater on the north side of the island that measured 4 feet wide and 2 feet deep. Authorities are seeking a boat seen leaving from the area at the time.

It was described as 23 feet long with stripes. 

CLICK HERE TO GET THE FOX NEWS APP

Investigators have ruled out a sonic boom by an aircraft.