Three schools in Anaheim were placed on lockdown Friday morning after the campuses received threatening phone calls, authorities said.
The Anaheim Police Department posted on Twitter shortly after 9 a.m. that it had received information regarding potential threats to several schools in north Orange County, including three in Anaheim and one in a neighboring city.
“Threats do not appear to be credible,” the department stated, adding that officers were on the campuses.
A police representative declined to say which schools were affected. The nature of the threats was not immediately clear.
The Orange County Sheriff’s Department said the threats were believed to be a hoax. Officials said shelter-in-place orders had been lifted by 10:15 a.m. at all schools, but law enforcement was planning to maintain a presence at and around the threatened schools.