ERBIL, Iraq — The Iraqi government escalated its confrontation with its northern Kurdish region on Wednesday, threatening to send troops and seize oil fields there and taking steps to shut down international flights to and from the region.

The moves came in retaliation for a referendum on Monday in which the region, Iraqi Kurdistan, voted decisively to seek independence from Iraq. Kurdish officials announced Wednesday that nearly 93 percent of voters approved the referendum, which aims to create an independent state for the Kurds, an ethnic minority in Iraq.

Iraq’s Parliament asked the country’s prime minister on Wednesday to deploy troops to the oil-rich city of Kirkuk, one of several disputed areas held by Kurdish troops but claimed by Baghdad, and to take control of all oil fields in the Kurdish region.

A decision to send troops would be up to Prime Minister Haider al-Abadi. He gave no public indication of his intentions on Wednesday, except to say he wanted “no fighting among the people of the country.”