An Iraqi parliamentary candidate was shot dead late on Sunday in his home near the city of Mosul, a family member and a security official said, less than a week before elections.
Islamic State claimed responsibility for the shooting of Farouk Zarzour in the village of al-Lazaka, but security officials disputed that claim and said they were treating it as a political killing.
Zarzour's brother and eight others have been arrested as suspects, they said.
Zarzour had been an adviser to parliamentary speaker Salim al-Jabouri.