President Muhammadu Buhari is in Maiduguri, Borno State, on a sympathy visit over the latest killings by Boko Haram terrorists.
He landed in Maiduguri from Addis Ababa, Ethiopia.
About 30 travellers were killed in the Sunday attacks in Auno, a location just 25 kilometres to Maiduguri.
Many vehicles were also set ablaze by the insurgents.
The attacks forced the closure of the Maiduguri gate by the military this week.