Remember last Friday when news circulated that North Korea tested a hydrogen bomb—but it was actually a nuclear bomb? Well now experts are saying there was not a bomb at all. According to Middlebury Institute’s James Martin Centre for Nonproliferation Studies, footage aired on North Korean state television was faked. In fact, experts in South Korea’s military announced on Saturday—just a day after the blast—that they think North Korea edited footage from a 2014 Scud missile test. The Centre for Nonproliferation Studies looked at two frames of video that show flames engulfing the missile and small parts of its body breaking away—which apparently isn’t characteristic of hydrogen or nuclear weapons. A senior researcher at the centre said, “North Korea used heavy video editing to cover over this fact.”