President Muhammadu Buhari has called on world leaders to strengthen relationships across borders to tackle the global threat of terrorism.
He also asked leaders to be more forthright in intelligence sharing to curb the growing sophistication of terrorism.
The president made the call on Thursday in Abuja while receiving the Egyptian Ambassador to Nigeria,  Aseem Muhammed Hanafi Elseify
He added that the recent attacks in some developed countries, have clearly shown the need for stronger global collaboration and a review of security architectures across countries.
Meanwhile  Chad has withdrawn hundreds of troops from neighbouring Niger, where they were helping local forces fight Boko Haram Islamist militants.
Observers say the pull-out over the past two weeks could weaken a region-wide struggle against the militants who have killed tens of thousands of people, forced many more to flee and triggered a humanitarian crisis.
There was no immediate explanation or comment from defense officials in chad.
The move came a month after the vast Central African country complained about an unexpected US. travel ban imposed on its nationals.
Residents from the border village of Bosso say banditry has increased since the Chadian troops started leaving