PORT HARCOURT, Nigeria, April 14, SPA -- Unidentified gunmen attacked a police station on voting day Saturday in Nigeria's restive oil region, killing seven police and leaving the building in ashes, police said. Rivers State police spokeswoman Irejua Barasua confirmed the attack, but had no more details. Angry security forces milled around outside the charred police station in the main southern city of Port Harcourt, the Associated Press reported.--SPA www.spa.gov.sa/440865