Six people were killed when a suicide bomber attacked provincial police headquarters in Baquba north of Baghdad on Tuesday, police said.The bomber detonated a suicide vest packed with explosives at the back gate of the Diyala provincial police headquarters in ethnically and religiously mixed Baquba, 65 km (40 miles) north of Baghdad.
Three policemen were killed in the explosion and eight others, including another four police, were wounded.
Gunfire which erupted after the blast killed another three people, including two women, police said.