Three people were killed on Tuesday in shootings and a bombing across Iraq.

Three people were killed on Tuesday in shootings and a bombing across Iraq.

In the restive northern city of Mosul, attackers gunned down Iyad Hussein Ahmed, an investigator in the Integrity Commission, Iraq's anti-graft watchdog, according to a statement from the organization and doctor Mahmud Haddad at the city's main hospital.

Ahmed was shot dead outside his home when he was about to set off for work, the statement said. Haddad said he suffered multiple gunshots.

Also in Mosul, a civilian was killed by gunmen outside his home Tuesday morning, according to Haddad and a security official who declined to be named. It was not immediately clear why the victim was targeted.

And in Diyala province, which remains one of Iraq's most violent, a bomb exploded inside the home of an Iraqi soldier in the town of Baladruz, 75 kilometers northeast of Baghdad.