A senior Peshmerga commander, General Salah Delmani, along with three bodyguards were killed after ISIS attacked his car in Daquq near the northern city of Kirkuk as Rudaw, Kurdish news website said.
Peshmerga is the military wing of Kurdish Regional Government (KRG).
The bomb was detonated while Delmani was visiting Peshmerga forces in Daquq, a senior officer on the Daquq front told Rudaw.
“At least five Peshmerga fighters were also wounded due to the explosion,” he added.
ISIS fighters have launched several assaults on Peshmerga positions after the latter took over both of Auzeria and Atshana villages in Daquq in early April.
Last month Peshmerga militias recaptured more than 30 villages in the region from ISIS.
More than 1,000 peshmerga troops lost their lives fighting against ISIS in northern Iraq. Secretary-general of the Ministry of Peshmerga Affairs Jabbar Yawar said another 4,600 have been injured since June 2014.