International fears of liquid bomb attacks on civilian airliners arose in August after British police foiled an alleged plot to bring down several planes bound for the United States. Heavy restrictions remain on carrying liquids on flights out of the UK.
"Fortunately, our [Russian] and foreign terrorists still do not have sufficient knowledge to make such explosive devices," said Andrei Semyonov, a deputy head of the Interior Ministry's forensic examination center.
He said no cases of confiscation or use of liquid explosives in Russia have been registered so far. However, information on synthesizing almost any explosive substance was available on the Internet until recently, he said.
"We are trying to monitor Web sites carrying information on how to prepare such devices, and their number has recently declined. However, the lengthy presence of such information on the Web had its negative effect, and we will have to fight against this for a long time," he said.
