Secretary of State Kerry speaks to Russian foreign minister . Joe Biden to travel to Kiev later this day . Unidentified gunmen occupy buildings in the eastern Ukraine city of Slaviansk . They arrived in two mini-buses , came to the police station and opened fire at the building before getting inside the facility through windows , the Donetsk regional police press office said . Pro - Russian protesters have taken over buildings in other cities in the region in past days .
Secretary of State Kerry speaks to Russian foreign minister . Joe Biden to travel to Kiev later this day . Unidentified gunmen occupy buildings in the eastern Ukraine city of Slaviansk . Pro - Russian protesters have taken over buildings in other cities in the region in past days .