Nigeria: Massive Prison Break in Abuja jail - 400 prisoners escaped
Several high-profile detainees, including suspected militants and jailed politicians, were in the facility at the time of the attack.
Loud explosions and gunfire were heard near the Kuje medium-security prison, just outside the capital, on Tuesday night when the attack happened.
Four inmates, a security guard, and several attackers were killed after the prison was targeted on Tuesday night, according to officials.
As well as the four inmates killed, 16 others were also injured during the attack, Nigeria's correctional service said.
Islamist militants have said they carried out the attack, and dozens of jihadists are thought to be on the run.
More than 5,000 inmates have escaped during prison breaks in Nigeria since 2020.