DENPASAR, Indonesia: Indonesian security forces on Wednesday stormed a riot-hit prison housing murderers, pedophiles and Australian drug mules in the island of Bali after a night of arson and rock-throwing.

Guards were forced to abandon the overcrowded Kerobokan prison, which holds 1,000 inmates including 12 convicted Australians, during the night-long riot. Authorities said that no foreigners were injured or involved in the trouble.

Some 100 heavily armed police and military troops stormed the jail on the holiday island at about dawn, firing volleys of rubber bullets.

Officials said that they intervened after attempts to negotiate with the rioting prisoners had failed, and after some inmates managed to get hold of firearms.

“They were forced to open fire and three people were injured in the legs and taken to a hospital,” Bali deputy police chief Ketut Untung Yoga Ana told Agence France-Presse. Another police official said later that an officer was also injured.

An Agence France-Presse photographer saw four people with wounds to the arms and legs being taken out of the facility on stretchers and driven away in ambulances, watched over by armed and helmeted officers.

All 12 Australian prisoners at Kerobokan, including two on death row and six serving life sentences, were safe, Australia’s foreign ministry said.

“The wing where the Australians are held is far from the place where we had the trouble. The Australians were not involved in any way,” said Bali police spokesman Hariadi, who goes by a single name like many Indonesians.

Among the Australians at the jail are convicted drug trafficker Schapelle Corby and a group known as the “Bali Nine”, who were caught attempting to smuggle drugs from Bali.

Up to 1,000 armed security forces backed by armored vehicles and water cannons were stationed on Wednesday outside the jail, which is in a suburban area of Bali and located seven kilometers from the tourism hub of Kuta beach.

“When we stormed in, they did put up a fight,” Bali police chief Totoy Herawan Indra told reporters.

“The prisoners also took firearms from inside the warehouse, but we seized them before they could be used,” he said.