Poland’s security services say a Chinese businessman and a Polish man, both employed in telecoms, have been arrested for spying.
The Chinese national, named as Weijing W, worked for a Chinese company in Poland, the security services said. Media reports say this is Huawei.
Huawei told the BBC it was aware of the situation and was looking into it.
The tech company has been a focal point of international scrutiny. with several countries raising security concerns.
Its chief financial officer Meng Wanzhou – the daughter of its founder – was arrested in Canada last month and faces extradition to the US on charges of breaking Iran sanctions.