Warning: This story may be disturbing to some viewers.

PERRY COUNTY, Miss. (WHLT) – Perry County deputies have issued a warning to parents about what they’re calling an “online cult” targeting young children.

764, which has been labeled as a Tier I terrorist group by the U.S. Department of Justice, has been contacting young children and teens through social media sites and online games, such as Roblox and Minecraft.

Investigators said the members of the group will build the child’s trust before manipulating them into taking and sending sexually explicit videos or photographs. They will then extort and blackmail the child into filming themselves performing sex acts, acts of self-mutilation and suicide or murder.

Perry County investigators asked parents to be proactive when it comes to allowing their children online unsupervised.

“When your kids come in day to day, you need to know what your children are doing, be involved. It takes less than 10 to 15 minutes of your time to just talk to your children every day and see how they’re doing. Check, go in their rooms. You got to be vigilant. Parents are going to have to start stepping up and being a part of this, because like I said before, we can’t police everybody’s child,” said Investigator James Burch, with the Perry County Sheriff’s Office.

The U.S. Department of Justice and the Federal Bureau of Investigation (FBI) are investigating the 764 group. Several arrests have already been made.