Suspected Boko Haram suicide bombers have struck the northeastern Nigerian city of Maiduguri, killing at least nine civilians, as the same armed group was also blamed for the death of eight soldiers in fierce fighting in neighbouring Chad.
The multiple attacks Maiduguri also left 13 wounded, police told the Reuters news agency on Monday, the latest in a spate of attacks in the region.
No group has officially claimed responsibility for the blasts in Maiduguri, but the use of suicide bombers in the region is a hallmark of Boko Haram.
Borno police said a male suicide bomber killed a security guard after entering the University of Maiduguri, near the city centre at 2120 GMT on Sunday.