There are concerns for a British Foreign Office employee in Hong Kong who hasn't been seen for 12 days after a business trip to China.
It's reported Simon Cheng Man-kit has been detained at the border after being in Shenzhen.
It's understood he was making his way back on a high speed train.
Lam Cheuk-Ting, a legislative councillor of Hong Kong, says it's a worrying situation.
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