London, June 23: The two teenage female suicide bombers who killed 30 people suspected to have been Boko Haram captives.
While the second blast occurred near a bus station that left only her dead.
Maiduguri is the largest city in northeast Nigeria and the birthplace of the Islamic extremist group Boko Haram who pledge their allegiance to Islamic State (ISIS).
The rising number of female suicide bombers has raised fears that these captives are being forced to blow themselves up.
It was the fourth suicide bombing in Maiduguri over the past three weeks.
Maiduguri, the capital of Borno state, has increasingly come under attack in the weeks since new President Muhammadu Buhari assumed power on May 29, vowing to wipe out the Islamists.
Around 276 girls were kidnapped from their school in Chibok on April 14 last year. The act caused global outage with many leaders showing solidarity with the girls.
Bring Back Our Girls is a campaign that was launched shortly after the kidnappings and garnered support even from US First Lady Michelle Obama.