Two teenage girls arrested Wednesday are accused of plotting "a mass casualty attack" at Memorial High School in Spring Branch ISD, according to authorities. The Spring Branch ISD police department was initially notified by the FBI of a potentially credible threat against the school on Tuesday and arrested the student involved,

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.

A plan to harm students at Memorial High School using guns and pipe bombs has led to the arrest of two teenage girls. This story, exclusively covered by KPRC 2, reveals that the girls are now in custody, and Spring Branch ISD police assure that there is no longer a threat to the school or its students.