KIEV, July 12. /TASS/. The Ukrainian military are relocating heavy weapons to the western town of Mukachevo, a representative of the extremist organisation Right Sector, Andrei Sharaskin, said on Sunday.

"It is a big column, even with gas and water suppliers; it is near Mukachevo already," he said in an interview with 112 Ukraine television channel.

The Right Sector tried to block the column of weapons, but as they say the people in military uniforms and wearing face masks were ready to fight, the Right Sector decided to stay away from fighting.

"We cannot explain yet what these weapons mean as the negotiation process continues," the representative said.

"The negotiations continue, we control the situation," press secretary of the Ukrainian Security Service Elena Gitlyanskaya told the television channel. "I believe, the news will come shortly."

The Trans Carpathian Prosecutor’s Office said that three people were killed and another eleven wounded in the Mukachevo attack. The Interior Ministry reported one civilian was among the dead. At the same time, the Right Sector said its two members were killed and another four were injured.

The prosecutors have described the incident in Mukachevo as a terror attack.

Shortly after that, President Poroshenko ordered the law enforcement agencies "to disarm and detain the criminals who opened fire and killed peaceful civilians in Mukachevo." The Right Sector has alerted its supporters.

Some 20 gunmen of the Right Sector group arrived at a cafe located on the territory of a sports complex controlled by Ukrainian MP Mikhail Lanyo on Saturday. Police and eyewitnesses said the gunmen had come for a meeting with Lanyo’s representatives to discuss the "redistribution of spheres of influence."

A conflict erupted between the talks, and the extremists later on opened fire from small arms on their opponents. The police arrived at the scene and tried to block the get-away route for the gunmen. In response, the gunmen opened fire using rifles, heavy machine guns and grenade launchers.

Breaking the police cordon, the Right Sector gunmen left the city by cars and burnt several police vehicles by opening fire from grenade launchers and also set on fire a traffic police checkpoint and a petrol station

The law enforcers, including special task force of the Interior Ministry and the Security Service, blocked the Right Sector gunmen in the wooded areas near Lavki.

The Right Sector’s members are blocking the presidential administration in Kiev and the organisation’s guards are near regional administrations in Lvov, Kharkov, Odessa, Zaporozhje and Nikolayev.