Amman, Jordan (CNN)— ISIS militants have launched an attack on the oil-producing northern Iraqi city of Kirkuk.
Militants have taken over Maktab Khalid, an area southwest of the city after heavy clashes with Kurdish Peshmerga troops. Among those killed was Brig. Gen. Shirko Fateh, the highest-ranking operational commander of the Peshmerga brigade located in Kirkuk.
Separately, heavily armed militants attacked an abandoned hotel in central Kirkuk used by local police as headquarters. Police and Peshmerga sources in Kirkuk told CNN that armed men put snipers on the rooftop of the hotel and security forces are surrounding the area.
There has been recent speculation that ISIS might attack Kirkuk to force Kurdish troops to divert their efforts away from Mosul, ISIS' stronghold in Iraq. Peshmerga fighters have moved in around the outskirts of Mosul recently, backed by coalition airstrikes.
ISIS has previously held areas on the outskirts of Kirkuk but not the central city.