Jakarta: The powerful earthquake that shook Indonesia’s Sulawesi island has displaced almost 10,000 people, a health ministry official said on Tuesday.

The 7.5 magnitude undersea earthquake struck early on Monday, killing at least six people and injuring more than 150. A tsunami warning was issued by Indonesia's meteorology agency, but was soon lifted.

The head of the health ministry's crisis centre, Rustam Pakaya, said in a text message that more than 1,000 buildings had been damaged in two provinces in Sulawesi, forcing nearly 10,000 people out of their homes to safe shelters.

A bridge in Buol regency was also broken by the tremors, Pakaya said.