Cops search around psychiatric hospital after bodies found

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The Guardian Angels along with local volunteers were on the streets of Brentwood, Long Island, patrolling on Thursday.

The view from SkyFoxHD showed investigators combing the grounds of Pilgrim State Psychiatric Hospital -- the site where two sets of skeletal remains were found. The first set was found last week. Police identified the victim as 19-year-old Oscar Acosta, who went missing on May 2. Police confirmed his death was a homicide.

Federal agents are currently looking into the possible link between the four bodies found in Brentwood and the MS-13, an extremely violent gang.

Last week, two girls were beaten to death. Police and the FBI stated they believe the gang may be responsible.

Suffolk Police Commissioner Thomas Sini said that the only people that should be fearful right now in Brentwood are those gang members. He said police will stop at nothing to ensure the safety of the residents of Brentwood as well as his county.