MOSCOW (Reuters) - A blast tore through a bus stop Wednesday near Moscow's training centre for the federal security services, injuring no one, police and the national anti-terror committee said.
"An unidentified explosive device blew up at a bus station at about 4.30 pm (1:30 p.m. British time)," said spokesman Nikolai Sintsov, from the national anti-terror committee.
A police spokesman confirmed there were no casualties from the explosion near the FSB Academy, which trains future security officers. The explosion comes on the first day of a visit by U.S. Vice President Joe Biden.
A decade after federal forces drove separatists out of power in a second war in Chechnya, analysts say the Kremlin is waging a losing battle with militants in its mainly Muslim North Caucasus region, who want to carve out a separate Islamic state.
Last week the rebels' Chechen-born leader Doku Umarov threatened in a video address more attacks on major targets across Russia, six weeks after a suicide bomber killed 37 people at Russia's busiest airport.
Interfax news agency quoted the national anti-terror committee as saying there was some damage to cars near the bus stop Wednesday.
(Reporting by Alexei Anishchuk and Tanya Ustinova, writing by Amie Ferris-Rotman)
