All three blasts occurred within half-an-hour of each other in Maiduguri . Witnesses said one bomber exploded a tricycle-taxi inside busy marketplace . Many wounded in attack which bears the hallmarks of terrorists Boko Haram . The first blast took place at around 8.30 am on Friday when two bombs went off near an army checkpoint, killing four people and wounding six others.
All three blasts occurred within half-an-hour of each other in Maiduguri . Witnesses said one bomber exploded a tricycle-taxi inside busy marketplace . Many wounded in attack which bears the hallmarks of terrorists Boko Haram . Neighbouring militaries trying to expel them from Nigeria-Cameroon border .