Two teenage girls accused of planning a "mass casualty attack" at a Houston-area high school were arrested, authorities said. The girls, 15 and 16, were taken into custody on Tuesday. Their names were not released by authorities because they are minors.

The two girls, ages 15 and 16, planned on placing pipe bombs around the school and using guns to then pick off panicking students and teachers, the Montgomery County Sheriff’s Office alleged.

The FBI arrested two teenage girls plotting a “mass casualty attack” using pipe bombs and guns targeting Memorial High School in Harris County, Texas, police said.

Authorities say two students, ages 15 and 16, were in the early stages of planning an attack at Memorial High School near Houston.The suspects

Two teenage girls in Texas are accused of plotting a “mass casualty attack” with pipe bombs and guns. Police say the girls, ages 15 and 16, were planning to attack Memorial High School in Hedwig Village, a suburb of Houston. The girls were arrested on Tuesday.

Two teenagers are under arrest for allegedly plotting "a mass casualty attack" at a Houston-area high school, the FBI said Wednesday night. The teen girls were accused of threatening to place pipe bombs and shoot their peers,

According to police reports, two teenage girls plotted to place a pipe bomb at Memorial High School, but their plan was foiled when a tip came in to authorities.