It is believed the three Chinese men were stopped and searched by Burmese soldiers, who suspected they may be spies after viewing pictures on their phones.
Stray artillery shells land on Chinese territory injuring five civilians, as conflict intensifies between Burmese government forces and Kokang rebels.
Burma has apologised to China for a 13 March incident in which one of its fighter jets dropped a bomb that killed five Chinese citizens and injured eight.
A Burmese delegation pays a visit to Yunnan Province to discuss refugees and the cross-border relationship amid Kokang conflict.
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The ashes of soldiers from the Chinese Expeditionary Forces were transported from Burma and reburied in China’s Yunnan Province.