Suffolk County (NY) Police Commissioner Timothy Sini said Thursday state troopers will begin increased patrols of parks and other state-owned land in the Brentwood and Central Islip area to help the county combat the MS-13 gang.

Sini told county lawmakers the gang — suspected in the killings of four young men in Central Islip last week — along with the opioid crisis are the top challenges facing the police department, Newsday reports.

“Obviously, this is a huge issue for Suffolk County and many other communities,” Sini told the legislature’s Public Safety Committee meeting during a marathon three-hour testimony in Hauppauge. “The level of violence is unprecedented.”