WARSAW (AFP) - A Polish Catholic priest has been abducted by pro-Russia militiamen in the eastern Ukrainian flashpoint city of Donetsk, the government and Polish media reported Wednesday.

"Our consular services have been working on securing the release of our citizen, we are also in touch with Church officials," Foreign Minister Radoslaw Sikorski told reporters.

He declined to provide further details on the case but Polish media named the priest as Father Pawel Witek and said he had been nabbed on Tuesday by separatist rebels.

The clergyman is said to be held at the Ukrainian SBU security services building occupied by the rebels in Donetsk.

His abduction was confirmed by Ukraine's Bishop Marian Buczek from the Catholic diocese in Kharkiv, the Polish news agency PAP reported.

The cleric said he was ready to negotiate with the captors.

Poland has been one of the staunchest supporters of the new pro-Western government in neighbouring Ukraine.

A four-member team of monitors from the Organisation for Security and Cooperation in Europe was also abducted in the Donetsk area on Monday.