KIRKUK, Kurdistan Region—Oil exports from the Iraqi city of Kirkuk to the Turkish Ceyhan port resumed on Friday after a three-day failure caused by technical problems in the pipeline network.

A source from Iraq’s North Oil Company told al-Sumariya News that within a few hours the amount of exported oil to the Turkish port would again reach 400,000 barrels per day.

Kirkuk is one of Iraq’s main oil production centers and is home to one of the largest oil reserves in the world.

The Iraqi government has exported oil from Kirkuk since 1920s.

The ethnically diverse province of Kirkuk is the center of dispute between Kurds and the federal government in Baghdad. Both sides claim the right to control the province.