Security authorities say multiple attacks rocked at least two communities in Borno state on Sunday, leaving eight people dead.
Three male suicide bombers were stopped, after they shot sporadically and attempted to infiltrate Maiduguri.
The bomb strapped to their bodies exploded, killing all of them, and a civilian vigilante.
In a second incident, two female suicide bombers attacked Kaleri area of Gwange, killing themselves and two others.