Deadly explosion rocks Russian military site near St Petersburg

An explosion at a Russian military police facility near St Petersburg has caused several floors of the building to collapse.

St Petersburg’s 78 news channel, quoting an unnamed source, reported at least three people were killed and several wounded in the blast on Tuesday in the town of Sertolovo, north of Russia’s second largest city.

 Governor Alexander Drozdenko has ordered assistance to the military in clearing the rubble.

"I have instructed law enforcement to assist the military in clearing the rubble and rescuing those injured in the collapse of the military police building on the grounds of the military base in Sertolovo. Units from the Emergencies Ministry and the Leningrad Regional Emergency Rescue Service are on the scene. The cause of the incident is being determined," the governor wrote on his Telegram channel.