A New Glenn rocket owned by Jeff Bezos’ Blue Origin exploded on the launchpad at Cape Canaveral Space Force Station during a test on Thursday night. The incident occurred around 9 p.m. ET as the vehicle conducted a static fire test ahead of its upcoming NG-4 mission.

The test aimed to fire seven engines in the booster stage while keeping the rocket firmly secured to the pad. Flames rapidly surged up the sides of the rocket before a massive explosion engulfed Launch Complex 36, causing severe damage to the facility and surrounding equipment. This marks Blue Origin’s sole launch site for its 322-foot-tall New Glenn rocket—a vehicle named after astronaut John Glenn. Repairs are expected to take months at minimum.

Blue Origin confirmed all personnel were accounted for and safe with no injuries or fatalities reported. “It’s too early to know the root cause but we’re already working to find it,” Jeff Bezos stated in an official message. “Very rough day, but we’ll rebuild whatever needs rebuilding and get back to flying. It’s worth it.”

The U.S. Space Force Eastern Range confirmed emergency responders were on scene and noted additional details about the incident would be released as more information becomes available. The explosion is Blue Origin’s first on-pad failure at Cape Canaveral since SpaceX’s Falcon 9 experienced a similar anomaly at Pad 40 in September 2016, which later traced to a ruptured helium tank.

The New Glenn rocket did not carry any payloads for Amazon’s Leo satellite constellation—a low-Earth orbit internet network—during this test.