Two buildings were damaged and people were evacuated in Russia’s St Petersburg on Saturday morning after local residents reported a loud explosion that blew out windows.
Witnesses theorize what the cause could be
Citizens of the damaged houses told Reuters that they heard some strange sounds followed by a blast and a fire.
“I first heard a whistle, because I had just opened the window, then a pop, a blaze and a full apartment of smoke, the window flew out,” local resident Elena told Reuters. She said this happened after 0700 local time (0400 GMT).
