Pro-Russian protesters in eastern Ukraine seize weapons - Interior Ministry
"Unknown people who are in the building have broken into the building's arsenal and have seized weapons," police said in a statement.
Separately, Interior Minister Arsen Avakov said on his Facebook page that the regional administrative building in another eastern city, Kharkiv, had been cleared of "separatist" protesters.
Pro-Russian protesters also broke into a regional administrative building in the mining city of Donetsk on Sunday.
(Reporting by Pavel Polityuk, Writing by Thomas Grove; Editing by Richard Balmforth)