ATHENS (REUTERS) - A small explosive device detonated outside a building housing Eurobank offices in central Athens on Wednesday (April 19), damaging its entrance and shattering windows, police said.

There were no injuries, police said.

Eurobank is Greece's third-largest lender by assets.

Small-scale attacks on businesses, police and politicians are frequent in Greece, which has a long history of political violence and is still struggling to emerge from a crippling debt crisis.

"The explosion damaged the entrance and smashed some windows," a police official said, adding that some nearby buildings were also slightly damaged.

Police had cordoned off most streets in the surrounding area following a warning call to a local news website.

The explosion, which occurred at 10.38pm local time (3.38am on Thursday, Singapore time), was loud and was heard in central Athens.