A significant law enforcement response occurred at Huntington Hospital in Pasadena. The incident was prompted by a 911 call made by an individual claiming affiliation with a global online network of extremists. The caller threatened a bomb and other violent acts, leading to a substantial response from authorities.

Details of the incident are available from the Los Angeles Times. Further information on the event can be found through the Los Angeles Times, which reported on the incident and the law enforcement response at Huntington Hospital.