Fifty-one unarmed people left the seized building of the Ukrainian Security Service's Luhansk department as of 0100 on Wednesday following negotiations, the Ukrainian Security Service press center said.

No one was hurt, the report indicated.

"Persons who continue to occupy the premises have allowed some Ukrainian deputies to visit it, and the deputies freely left the building afterwards," the press center said.

The negotiations go on.

As reported earlier, pro-Russian protesters stormed the Ukrainian Security Service's building in Luhansk on April 6. The city prosecutor's office opened a criminal case.

The police said later that the protesters had grabbed the building's arsenal.

The Ukrainian Security Service demanded that hostages kept on the premises of its Luhansk building be freed, the building be cleared of mines and weapons be laid down.

"An antiterrorism squad of the Ukrainian Security Service, which is working on the liberation of the service's administrative building Luhansk seized by members of a radical organization, has found out that the perpetrators have mined the premises," the Ukrainian Security Service press center said on April 8.

"Threatening with weapons and explosives, the separatists are holding about 60 citizens as hostages and not allowing them to leave the building and to go home. In other words, they are using methods of terrorists," the press center said.