Fullerton College students received an alert via email, text and phone call on Thursday about a bomb threat at Fullerton Union High School.

According to reports and videos uploaded by the community to Citizen, police have closed off Lemon Street between FUHS and FC.

Bomb threats were called into two other Fullerton high schools, including Sunny Hills High School and Troy High School. All three schools are on lockdown while police officers investigate the threats.

“At this time, it is unknown whether these threats are credible,” said Fullerton PD in a post on X. “We are asking the community to avoid the area surrounding each school so officers and school staff can focus on safety and the investigation.”

According to the mass alert to FC students, the Fullerton College campus may be used as a staging area for the high school. Campus safety officials assure that the college is not under threat.

Updated 3:27 p.m.

Fullerton PD has cleared FUHS and Troy High School of any bomb threats as of 3:24 p.m., and lockdowns have been lifted. Police activity around FC has concluded.

The department has issued another statement via X regarding another threat at Fern Drive Elementary.

Updated 3:51 p.m.

According to Fullerton PD, students from Fern Drive Elementary have been released as of 3:45 p.m. Sunny Hills High School is still under lockdown for further investigation into the threats.

Updated 4:51 p.m.

The lockdown for Sunny Hills High School has been lifted as of 4:17 p.m., according to Fullerton PD via X.