Three Iraqi children and two women from the same family were killed Monday when a rocket targeting Baghdad airport, where US troops are stationed, fell on their home instead.
The rocket which was launched from the Al-Jihad neighbourhood of Baghdad also wounded two other children.
In a statement, the military accused “cowardly criminal gangs and groups of outlaws” of seeking to “create chaos and terrorise people”.
It said Prime Minister Mustafa al-Kadhimi had ordered the arrest of the perpetrators and said “these gangs will not be allowed to go around and tamper with security” with impunity.
Between October 2019 and July 2020, at least 39 rocket attacks targeted American interests in Iraq. A similar number again has taken place in recent months.
The Monday attack comes after Washington threatened to close its embassy and withdraw its 3,000 troops from Iraq unless rocket fire stops.