According to the Tampa Bay Times, two young girls—ages 11 and 12—who attend Bartow Middle School were arrested Tuesday on charges that they planned to conduct a stabbing attack at the school.

Bartow, FL, Police Chief Joe Hall said during a news conference, "If I had children in school I'd be half scared to death," according to reports.

"They wanted to kill at least 15 people and were waiting in the bathroom for the opportunity to find smaller kids that they could overpower to be their victims," Chief Hall said.

Officers reportedly found the girls in a bathroom with a goblet in hand—allegedly they planned to drink their victims' blood, according to reports. Authorities say the girls said they were Satan worshippers.

According to CNN, police searched the girls' homes and discovered a hand-drawn map that included the phrase "go to kill bathroom."

Text messages appeared to show that the girls planned to kill themselves when their murder spree was finished, according to KXXV-TV.

The superintendent of schools plans to file for the expulsion of the two students, according to KXXV-TV.