KYIV. April 14 (Interfax) - Valentyn Nalyvaichenko, chief of the Ukrainian Security Service (SBU), said a security operation could be launched at night.
"We have not much time left. Starting this night and tomorrow morning, efforts will be intensified to spot the unrest and explain to the local population that they must leave such rallies," Nalyvaichenko said on 1+1 television, when asked how long the security operation would last.
Nalyvaichenko said that subversive groups are no longer hiding and operate openly. These groups were secretly and professionally formed and "are, in fact, criminal armed groups," he said.
These people are trying to provoke panic, Nalyvaichenko said, adding that "18 people have been detained already," among them officers of Russian armed forces' Main Intelligence Department.