Armed men have crashed a van full of gas canisters into Microsoft's headquarters in Athens, Greece at approximately 01:45 GMT Wednesday, Reuters reports.
According to the police, at least two men armed with pistols and a machine gun had kept security guards at bay while another man rammed the van through the entrance, setting the building on fire.
No one was injured in the attack, but the van was destroyed and the ground floor of the building was badly damaged.
"There was extensive damage on the ground floor. Microsoft will not operate today," said police spokesman Thanasis Kokkalakis.