An Iraqi security official and a militia commander say a new airstrike has targeted a military base in the western Anbar province.
Sunday's strike missed the base, landing outside the perimeter and causing no damage or casualties.
The airstrike was the latest in a series of unclaimed strikes on weapons depots and bases of Iran-backed militias in Iraq.
The Popular Mobilization Forces blame the string of bombings on Israel, which frequently targets Iranian interests in neighboring Syria.