Explosion tore through a crowded shopping district in Abuja.
Witnesses say 60 girls and 31 boys abducted by Boko Haram.
A suicide bomber killed at least 21 people in northern Yobe state.
Will discuss security situation in north-eastern Nigeria and how to tackle Boko Haram militants.
Women abducted close to where 200 schoolgirls were taken.
Boko Haram said to have carried out fresh attacks in Borno state.
Police in Abuja say protests posing "serious security threat."
At least 14 dead in second attack targeting football fans in a fortnight.
Says can't risk using force to rescue schoolgirls taken by Boko Haram.
Sanctions levied against the Nigerian militant group five weeks after it kidnapped more than 200 schoolgirls.
