BAGHDAD: A suicide bomber in a wheelchair blew himself up at the entrance to a police station north of the capital Baghdad Sunday, killing three people and wounding 18, officials said.

Two police officers were killed and 10 injured in Tarmiyah, about 30 miles (50 kilometers) north of Baghdad, two police officers and one medical official said.

The head of the Tarmiyah city council, Qassim Khalifa, said it was not clear whether the bomber was really handicapped or using the wheelchair as a way to deflect attention from security personnel.

The bomber went to the police station claiming to need a letter from the police certifying he’d been maimed in a terror attack, Khalifa said. Iraqis who have been disabled from a bombing or shooting can receive compensation from the government if their injuries are documented.