COLLEYVILLE, Texas -
An anonymous note that threatened a mass shooting prompted the lockdown of three schools in Colleyville Tuesday afternoon.
According to the school district, police requested that Colleyville Heritage High School be placed on lockdown because of a "tip of a potential school safety concern discovered today."
That safety concern was reportedly a note from anonymous student at Colleyville threatening a "large massacre shooting" of "Popular and Rich kids at Colleyville."
Police said the lockdown was in an abundance of caution. Ultimately students were released at their regular time.
Nearby Heritage Middle School and Heritage Elementary School were also locked down as a precaution while police investigated. And students there were also sent home at their regular time.
The district said both Colleyville and Grapevine police have increased their presence in the area and district leaders are continuing to investigate the threat.
Arlington Lamar High School was also locked down Tuesday morning because of a gun rumor.
The school was searched at about 8:40 a.m. after one student told a resource officer that he or she had seen another student with a gun, but nothing was found.
