A suspected bomb has killed three people including a woman, a small child and a policeman after it exploded outside a police building in the town of Khasavyurt in the Russian republic of Dagestan. As many as 20 policemen and local residents were injured after the device, thought to have been contained in a moped, blew up some five metres from the building. Dagestan, across the border from war-torn Chechnya, has seen much violence in connection with the Chechen war. Khasvyurt was the town where separatist and the Kremlin signed a peace treaty after the first Chechen war ended in 1996. **PHOTO CAPTION*** Police investigators work at the site of an explosion in the city of Khasavyurt, Dagestan, Thursday, July 17, 2003 in this image taken from video. (AP Photo/ NewsTeam)