Polish public TV channel TVP also said security services had searched the local offices of Huawei Technologies Cos Ltd, as well as the Polish offices of telecoms firm Orange. Huawei is facing increased spying accusations from the United States and its allies.
Polish authorities have reportedly arrested Huawei's sales director and an ex-security agency staffer on allegations of spying.
"A Pole and a Chinese citizen have been arrested on suspicion of spying".
"ABW (Internal Security Agency) officials conducted actions, as a result of which, we handed over belongings of one of our employees", Orange Polska said in a statement. They took "documents and electronic data" from Huawei's office, said The Wall Street Journal.
Police searched both of the suspects' homes as they arrested the pair on Tuesday.
"The Chinese national is a businessman working in a major electronics company. the Pole is a person known in circles associated with cyber business", Maciej Wasik, the deputy head of Poland's special services, told PAP.
Meng Wanzhou, the chief financial officer of Huawei and the daughter of founder Ren Zhengfei, was arrested in Canada last month at the request of the USA government.
Her arrest highlighted US accusations that Huawei broke sanctions against Iran, but the USA has also been pushing to try to curtail Huawei's influence, warning about the company's possible ties to Chinese intelligence and calling on countries to exclude the company as they build new 5G networks. If convicted, the men could face up to 10 years in prison.
Of the latest reported arrest of its staff, Huawei said in a statement to Reuters that it was "aware of the situation, and we are looking into it".
The allegations were that Huawei was using its kit to spy on other governments - claims the firm has strenuously and repeatedly denied.
"We have no comment for the time being". "Huawei complies with all applicable laws and regulations in the countries where it operates, and we require every employee to abide by the laws and regulations in the countries where they are based", it added.