Whitcomb Continuation High School was on lock down for nearly an hour around noon Tuesday as authorities worked to determine the source of a threatening text message.
The student, who was not identified, received a text message that said he would be shot. The student could not determine the source of the text and took it as a serous threat, said Whitcomb Principal Rebecca Summers.
The text was later determined to be a joke between two friends, according to Lt. James DeMond of Glendora Police.
"Since we didn't know who was threatening him, we took it as a credible threat," Summers said.
Four officers responded to Whitcomb, along with three detectives and a school resource officer. The threatened student was put into protective custody by Glendora PD and his parents were notified while detectives worked to trace the source of the call, DeMond said.
During the investigation, the student who sent the text realized the police were involved and told his friend that it was he who sent the message as a joke, DeMond said.
"We contacted the person who made the text, verified it was him and that's how we determined it was a practical joke," DeMond said.
Lockdown was lifted around 12:45 p.m.
School authorities and Glendora PD would not elaborate on what punishment the student would receive, but are very glad the situation was resolved quickly and without incident.
"My concern was for the safety of my students and my staff. I was glad it turned out not to be serious," Summers said.