SLOVYANSK, Ukraine (AP) — Ukraine’s interior minister says one security officer has been killed and five others have been wounded in a gunfight with pro-Russian militia.

Arsen Avakov said in a Facebook post Sunday the Security Service officer was killed in Slovyansk where a police station was seized by camouflaged armed men.

In this photo taken on Saturday, April 12, 2014, Armed pro-Russian activists stand outside the police station in the eastern Ukraine town of Kramatorsk. The interior minister overnight reported an attack on a police in the city of Kramatorsk, close to the city of Slovyansk. A video from local news web-site Kramatorsk.info showed a group of camouflaged men armed with automatic weapons storming the building. The news web-site also reported that supporters of the separatist Donetsk People's Republic have occupied the administration building, built a barricade with tires around it and put a Russian flag nearby. (AP Photo/Maxim Dondyuk, Russian Reporter magazine)

In this photo taken on Saturday, April 12, 2014, Armed pro-Russian activists stand outside the police station in the eastern Ukraine town of Kramatorsk. The interior minister overnight reported an attack on a police in the city of Kramatorsk, close to the city of Slovyansk. (AP Photo/Maxim Dondyuk, Russian Reporter magazine)

An Associated Press reporter on the ground didn’t see any unrest there when he arrived.

The unrest in Slovyansk and the nearby major industrial city Donetsk were the latest signs of spiraling anger in eastern Ukraine, which has a large Russian-speaking population.