PALU, Indonesia (AFP) - Indonesian police on Tuesday said officers killed two people and wounded five others when they opened fire on protesters who had taken over an oil well off Sulawesi island. Officers arrested 23 people over the riots on Tiaka island, Central Sulawesi province, which began on Saturday and escalated Monday, provincial police chief Dewa Parsana told reporters. Armed with machetes, sickles and Molotov cocktails, hundreds of people attacked the well belonging to state-owned oil and gas company Pertamina and PT Medco E&P Tomori. They held two employees, a soldier and two policemen hostage but later released them, Parsana said.