A red flag has been raised in the Nigerian police force after a key suspect in the Christmas Day bombing which killed over 40 people escaped from police custody.
Many now suspect a collusion between the police and Islamist sect Boko Haram after Kabiru Sokoto - suspected member of the group escaped from police charge.
A police commissioner has now been arrested.
After the Christams Day attacks President Goodluck Jonathan voiced concerns that members of Boko Haram had infiltrated government and security agencies.
Police chiefs have accused their own commissioner of "serious negligence" and are treating the escape as a criminal case.Sokoto is believed to have planned the bombing of St Theresa Roman Catholic church in Madalla/Photo/Reuters
Sokoto is believed to have planned the bombing of St Theresa Roman Catholic church in Madalla, just outside the capital city of Abuja.
The police arrested Sokoto on 14 January in Abuja at a lodge owned by Kashim Shettima, governor of Borno state in the north-east of the country.
But while Sokoto was being transported to a police station the next day, youths surrounded the police cars leading to a break out of pandemonium, during which the suspect managed to escape.
"The police view this development as a serious negligence on the part of the commissioner of police and have since queried and suspended him from duty," a statement released by the police read.
According to the police, Sokoto was the only major suspect to be arrested for involvement in the bloody attacks blamed on Boko Haram, which has stepped up its attacks over the last year.
June last year, police commissioners agreed to flush out possible Boko Haram moles who might have infiltrated the police force following an attack by Boko Haram on the police headquarters in Abuja, the country's capital.
In 2010, President Goodluck Jonathan sacked the then Inspector-General of Police, Mr. Ogbonna Onovo, over lack of commitment, inefficiency, rampant corruption within the police force and rising insecurity in the nation