The UK Foreign Office has expressed concern over reports that a Hong Kong consulate employee has been detained at the Chinese border.
Media reports say Simon Cheng, who is thought to be from Hong Kong, is believed to have gone missing on 8 August while on a business trip.
The Foreign Office said it was “seeking further information from authorities in Guangdong Province and Hong Kong”.
The British embassy in Beijing is providing support to his family.
A Foreign Office spokesman said: “We are concerned by reports that a member of our team has been detained while returning to Hong Kong from Shenzhen.”
Shenzhen, in south-east China, links Hong Kong to the Chinese mainland.
Local outlet HKFP reports that Cheng is a trade and investment officer at the Scottish Development International section of the consulate.
It says he travelled to a business event in Shenzhen on 8 August via the Lo Wu immigration control point.
His girlfriend told news site HK01 he had planned to travel home by train the same day, but did not return.
The Scottish government said it was concerned for Cheng’s welfare and was liaising with the Foreign Office.