The threat was received at 7:45 a.m., nearly three hours before the theme park at 26101 Magic Mountain Parkway was scheduled to open, prompting a response from the Los Angeles County Sheriff's Department and California Highway Patrol."
The park remained closed as of 11:30 a.m. A sheriff's spokesperson said the investigation was nearing its conclusion and the "all clear" was expected to be given "soon." Magic Mountain officials would decide whether to open the park, the LASD spokesperson said.
Aerial video from AIR7 showed a fire engine and more than a dozen LASD vehicles at the scene, including an armored vehicle that was part of the sweep by deputies.
"The park appreciates the timely response by both law enforcement agencies and values the ongoing partnership and commitment to keeping our community and guests safe," a Magic Mountain spokesperson said in a statement provided to ABC7. "The park is currently closed, but we expect to open at 12:30 p.m."
Details of how the threat was communicated were not available.