Prominent Nigerian news blogger Abubakar Sidiq Usman has been released on bail, the country’s anti-corruption agency Wilson Uwujaren has confirmed to the BBC.
The Economic and Financial Crimes Commission (EFCC) had arrested him on Monday accusing him of “offences bordering on cyber-stalking”.
He was held in custody for 36 hours and has yet to be charged in court.
Last week, Mr Usman published allegations that EFCC acting chairman Ibrahim Magu was bullying his staff.
His arrest sparked fury on social media and was criticised by both the governing and main opposition party.