Two police officers killed in Russian suicide blast

Russian investigators say two police officers were killed today by a suicide bomber in a restive North Caucasus province near Chechnya.

Svetlana Gorbakova of the Investigative Committee said a suicide attacker approached police headquarters in the town of Karabulak in the province of Ingushetia and detonated his explosives.

The blast killed two police officers and wounded one other.

Half-an-hour later, a vehicle parked near the police headquarters exploded, wounding a worker of the local prosecutor's office.

The attacks came a week after twin suicide bombings in the Moscow subway killed 40 and wounded scores of others during rush hour. Authorities blamed militants from Russia's North Caucasus.