A bomb exploded near the offices of a business federation close to where the parliament is located in Athens, the capital of Greece, early on Tuesday, breaking windows of the buildings in the area. However, no one was reported to have been injured in the explosion.
According to the Greek Police, the blast was carried out by domestic rebel groups, and is being linked to the country's dire economic crisis.
A local newspaper had also received an anonymous call about the impending blast, Reuters reported.
The bomb, which was placed in a backpack, went off outside the Hellenic Business Federation offices at about 3.30 am local time, and the police cordoned off the area that is close to the Syntagma Square that houses the Greek parliament.