Myanmar has deployed 500 soldiers to the Muslim-majority northern part of Rakhine state amid fears of another wave of crackdown on Rohingya Muslims.
Two military sources based in the northwestern state said the decision was taken after seven Buddhists were found dead in mountains near the town of Maungdaw last week.
One of the military sources said about 500 troops were sent to several towns, including Buthidaung and Maungdaw, near the border with Bangladesh on Thursday.
Residents claim the seven Buddhists were killed after they discovered a camp for Rohingya fighters.
The government blames the incident on "extremists," accusing the fighters of killing informants in the Muslim community.
Rakhine State police chief Colonel Sein Lwin said, "We have to increase security operations because the security situation has worsened, some Muslims and Buddhists have been killed by the insurgents."