The authorities in Burma have imposed a night-time curfew in at least two towns in western Rakhine state as inter-communal violence continues to spread.
Fighting between Rohingya Muslims and ethnic Rakhine Buddhists has been reported in two more districts.
At least four people have been killed and more than 1,000 houses burned down since the clashes began on Sunday.
Police have deployed reinforcements in the townships of Min Bya and Mrauk Oo, where curfews are now in effect.
The BBC Burmese Service says at least one person was killed in fighting in Mrauk Oo on Wednesday.
Rakhine state spokesman Myo Thant said the fighting had now spread to the townships of Kyauk Phyu and Myebon, south of the state capital Sittwe.
“Houses are burning and clashes between the two communities are ongoing,” he said.
“The most important thing is to put out the fires. We are trying to control the situation.”