The leaders will discuss "not just specifically Boko Haram but also the issues of the terrorist situation and threat in Nigeria, they could be part of the whole range of issues under the (summit's) banner of peace and security," the spokesman Ben Malor said yesterday.
He added that the security situation in northern Mali is also among issues that are expected to raised during the meeting on Friday.
A subsequent coup in Bamako led to chaos, and militants linked to Al-Qaeda overpowered the Tuareg to seize control of Mali's northern desert.
A French-led military operation launched in January 2013 ousted the extremists, but sporadic attacks have continued and the Tuareg demand for autonomy has not been resolved.
In Nigeria, the April 14 mass abduction of schoolgirls by Boko Haram Islamist group in Chibok town in Nigeria's northeast Borno state has spurred worldwide outrage and offers of military aid from foreign nations including France, Britain and China.