Four people, including members of Iraq’s security forces, were killed on Saturday in an attack by ISIS extremists near the northern city of Mosul, officials said. The attack occurred at night in the Makhmur region south of Mosul, the former stronghold of ISIS, a security official said on condition of anonymity. It left dead four people, including the mayor of the hamlet, at least one police officer and a member of the pro-Iran Popular Mobilization Unit (PMU) militia, the official added. ISIS extremists had targeted a PMU position at around 2:00 am (2300 GMT), Salih al-Jiburi, an official from a nearby village, said. They shelled and fired small arms during the attack, said Jiburi, who put the toll at four dead, including the mayor and militia fighter. The attack comes less than a week after an ISIS assault near the northern city of Kirkuk killed 13 members of the Iraqi federal police. The extremist group also claimed responsibility for a major attack in July that killed more than 30 people at a market in Baghdad’s Shia district of Sadr City.