Gunmen who turned up at dawn took control of official buildings in Horlivka, a town of almost 300,000 people, said a Reuters photographer. They refused to be photographed.
The heavily armed men wore the same military uniforms without insignia as other unidentified "green men" who have joined pro-Russian protesters with clubs and chains in seizing control of towns across Ukraine's Donbass coal and steel belt. More pics after cut

Some 30 pro-Russian separatists also seized a city council building in Alchevsk, further east in Luhansk region, Interfax-Ukraine news agency said. They took down the Ukrainian flag and flew a city banner before allowing workers to leave.
Attempts to contain the insurgency by the government in Kiev have proved largely unsuccessful, with security forces repeatedly outmaneuvered by the separatists. The West and the new Ukrainian government accuse Russia of being behind the unrest, a charge Moscow denies. 
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