DONETSK, Ukraine - Pro-Russian militants have seized a second building in the eastern city of Slaviansk, which houses the local headquarters of the state security service, police said on Saturday.

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At least 20 armed militants took over the city's police headquarters earlier.

"The same group has seized the building of the SBU (security service) in Slaviansk," Donetsk regional police said in a statement.

Ukrainian Foreign Minister Andrii Deshchytsia called on Russia to end the "provocative actions by Russian agents in east Ukraine."

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