'Myanmar is like a battlefield': UN says at least 18 dead as security forces fire on protesters

Police and troops crack down on rallies held across the country in defiance of junta

At least 18 people have been killed, according to the UN, after security forces in Myanmar used lethal violence against anti-coup protesters in the most deadly crackdown since the military seized power at the start of February.

Live bullets, stun grenades and teargas were fired at demonstrators in several towns and cities as police, backed by troops, attempted to stamp out countrywide rallies held in defiance of the junta.