The AHA and Health-ISAC observed a social media post related to the active planning of a coordinated, multi-city terrorist attack on hospitals in the coming weeks. The AHA and Health-ISAC have created and are sharing this bulletin out of an abundance of caution to spread awareness of the potential threat. The AHA and Health-ISAC are in close contact with the FBI regarding the threat and will provide additional information as it becomes available. At this time, no information is available to either corroborate or discount this threat's credibility.