Chris McKenzie, the police chief in Carthage, told a news conference that the gunman shot 11 people in all, including a police officer who was wounded.

Six of the victims died at the Pinelake centre which offers care for the elderly and Alzheimer's sufferers, and two died of their injuries in the hospital.

The alleged gunman, identified by McKenzie as Robert Stewart, 45, was arrested after being shot and wounded by police and faces eight counts of first-degree murder.
 
Officials did not disclose a motive for the attack.