China on Sunday condemned fighting on its border between Myanmar forces and the Ta'ang National Liberation Army (TNLA) that has left 19 dead, mostly civilians, in some of the worst bloodshed on the restive frontier in recent years.
The fighting erupted on Saturday when ethnic minority insurgent groups, who are locked in a long-running battle with the Myanmar state, attacked security posts around Muse, a border town and trade hub in northeastern Shan state.
A local resident told AFP she heard gunfire through the night until early Sunday morning, with fear gripping a town that lives at the mercy of both government militias and ethnic armies fighting for more autonomy.
"We heard shooting the whole night until this morning around 6:00 am.... People are still frightened," said Aye Aye.
Saturday's carnage, which also left at least 27 wounded, was one of the bloodiest days in recent years of a conflict that has hampered Myanmar leader Aung San Suu Kyi's attempts to forge nationwide peace.
The insurgency in the northeast is one of some two dozen ethnic minority rebellions that have roiled Myanmar's border regions since independence in 1948.
Observers believe Beijing holds significant sway over the rebels near its border with Myanmar and is a key player in Suu Kyi's faltering peace process.
On Sunday the Chinese embassy in Yangon condemned the clashes and said it had urged "relevant parties" to reach an immediate ceasefire.
The violence "made people from the Myanmar side flee across the Chinese border, and stray bullets have entered into Chinese territory", the statement added.
Clashes in the border region in early 2017 sent more than 20,000 Myanmar refugees scrambling across the border into China's Yunnan province, raising tensions between the neighbours.
Saturday's attacks were blamed on the Kachin Independence Army (KIA) and the Ta'ang National Liberation Army (TNLA), which claimed responsibility for the operation and apologised for the civilian deaths.
A TNLA spokesman told AFP its forces targeted a casino run by army-linked militias outside Muse.