Bomb blast outside bank in Greece

A bomb was left near Citibank in February

A bomb has exploded behind a bank in Athens, damaging two cars but causing no injuries, police say.

The explosion happened outside a branch of Citibank at 0300 (0100 GMT) in the Nea Ionia district of the capital.

Police said the bomb was detonated from close by using electric cables. There was no claim of responsibility for it.

Last month a large car bomb was defused outside another Citibank office in Athens, but no-one has claimed responsibility for that either.

That bomb contained enough explosives to demolish a four-storey building.

No information was available on the size of Monday's bomb, the Associated Press reported.

The car bombs come amid a campaign of violence by far-left militants, who have mounted several attacks on police.

Greece has faced severe anti-government protests and rioting since police shot dead a teenager in December.