A bomb exploded on Friday evening at the offices of Hellenic Train in central Athens.
At 8:53 p.m., an anonymous caller phoned the news website “Zougla,” warning of a bomb and claiming it would detonate within 35 to 40 minutes.
The explosion was caused by an improvised device placed inside a backpack, which had been left on a motorcycle without license plates outside the building.
Earlier, traffic was suspended along a section of Syngrou Avenue.
As of now, no injuries have been reported.