Jakarta - Three explosions rocked eastern Indonesian province of North Maluku's capital of Ternate early Monday, caused minor damage but no reports of casualties, local media reports said.

The blast took place at the residence of the North Maluku governor, the office of the North Maluku regional government and the building of the North Maluku regional legislative assembly at about 3 am Monday, the state-run Antara news agency reported.

There were no reported injuries and local police have not yet given an explanation for the blasts, Metrotvnews. com said.

Indonesia is on high alert ahead of the imminent execution of the three convicted Bali bombers, who were responsible for the 2002 terrorist attack that killed 202 people, mostly foreign visitors. (dpa)