Chad’s President Idriss Deby welcomed US Secretary of State Rex Tillerson at the Presidential Palace in N’Djamena, Chad on Monday.

The secretary departed the Kenyan capital of Nairobi on Monday morning to visit Chad and will then travel to Nigeria, both oil-producers struggling to contain the Islamist Boko Haram insurgency, on Monday afternoon and evening.

Tillerson has cut short his first trip to Africa to return to Washington about one day ahead of schedule to deal with urgent work there. Instead of spending Monday night in the Nigerian capital, Abuja, before flying back to Washington, Tillerson’s spokesperson said the secretary had changed his schedule so that he would spend only a few hours in Nigeria before leaving late in the evening to fly home.

Tillerson’s week-long, five-country visit to Africa has come amid other urgent foreign policy developments, including Thursday’s announcement that U.S. President Donald Trump will meet North Korean leader Kim Jong Un.

On Saturday while visiting Nairobi, Tillerson, 65, canceled his scheduled events because he had been feeling unwell.

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