TVBS and other media sources are saying that as many as six prisoners armed with guns have taken the warden of Kaohsiung Prison hostage and are demanding escape vehicles. This sort of prison break is unprecedented in Taiwan. Will update with more info.
5:45: apparently a few shots were fired at some point, and a guard may have been injured. A lot is unclear. Heavily armed police are being mobilized. The main perpetrator is believed to be the head of Bamboo United (竹聯幫) in Kaohsiung. Initial reports said prisoners got into a brawl, and when guards intervened, they took the opportunity to move against them. Sounds like the scene from Guardians of the Galaxy.
6:30 more details. Six inmates managed to break into the gun stash somehow, obtaining four rifles and six handguns. They took a prison official and two 替代役 (alt. military service) personnel hostage. The head of the guards and the deputy warden offered themselves as hostages in exchange for the other three’s release. The warden then swapped himself for the deputy warden. The prisoners have been convicted of charges including drug offenses, robbery, and murder, and they are demanding a getaway car. This is all confirmed by the Ministry of Justice.