The U.N. Security Council expressed deep concern on Wednesday over increased violence across Myanmar and in a rare statement, agreed by the 15-members, called for an immediate end to fighting and for the military to exercise utmost restraint, Reuters reported.

There are reports of a buildup of heavy weapons and troops in Chin state, suggesting an imminent army attack to flush out militia groups formed after the military coup on Feb. 1.

Myanmar's junta has made no comment on the situation in Chin, a volatile border region that has become a forefront of resistance against military rule.