Authorities in Long Island, New York believe four people were killed by the notorious MS-13 gang and their bodies were dumped in a park.

The gruesome discovery was made Wednesday night in a wooded area of the Central Islip park, near a soccer field.

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The victims were male, ranging in age from 16 to 20, and officials said the murders occurred in the previous two days.

Suffolk County Police Commissioner Timothy Sini said the manner in which the men were killed - using a sharp or edged instrument - "is consistent with the modus operandi of MS-13."

On "Fox & Friends" today, Judge Jeanine Pirro said the threat posed by the Central American street gang has been growing in recent years.

She pointed to the immigration enforcement policies under the Obama administration for worsening the problem, since so many of the gang's members are here illegally.

Pirro said initiation into the gang, which has its roots in El Salvador, involves beating someone to death in front of other gang members.

"They are in your schools, in with your children. ... Eric Holder, Loretta Lynch, I don't know what these people were thinking. [MS-13] is almost worse than ISIS," she said.

Watch her full comments above and don't miss "Justice" on Saturday at 9pm ET on Fox News Channel. Judge Pirro will talk to Attorney General Jeff Sessions, who promised a "new era" of enforcement in a speech this week near the Mexican border.

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A few weeks ago, Judge Pirro spoke to the parents of Nisa Mickens, who was brutally murdered in Long Island on the day before her 16th birthday.

Mickens and her friend, 16-year-old Kayla Cuevas, were targeted by four MS-13 members as they walked home. Cuevas was apparently involved in a dispute at her high school with one of the gang members.

The suspected killers, who have since been arrested, were in the U.S. illegally.

Watch the interview below (it begins at the 4-minute mark).

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