Grenade attack hits Kiev office building

Ukrainian police said Monday they were investigating a grenade attack on a Kiev office building that caused damage but no injuries.

An unknown assailant fired the rocket-propelled grenade at the building in central Kiev at 1:30 am (22:30 GMT), police said.

The attack damaged the facade, windows and interior of the building, which houses a Ukrainian bridge construction company called Mostobud.

Police said they were investigating the incident as a "terrorist attack" but provided no other details.

Attacks involving grenade launchers and other weapons are not uncommon in Ukraine, where a large number of arms are circulating due to the conflict with Russian-backed separatists in the country's east.

Last month a grenade launcher was used in a similar overnight attack on the offices of a Ukrainian television channel owned by a pro-Russian lawmaker. No one was injured in the attack and police have yet to identify the perpetrators.