The quake that hit on Sunday and measured 5.4 on the Richter Scale also left over 200 houses damaged, Xinhua reported.
Three of the injured were in serious condition and the rest sustained minor injuries in Buru district, Xinhua quoted spokesman of the National Disaster Management Agency Sutopo Purwo Nugroho as saying.
As many as 68 houses completely destroyed and one mosque was also damaged in the district, he said.
The 5.4 magnitude quake had its epicentre 66 km southeast of Buru Selatan and a depth of 10 km. (IANS)