Nigeria frees student arrested after tweet about first lady Aisha Buhari

Aminu Adamu's detention had sparked widespread outrage before Aisha Buhari withdrew complaint

Nigeria has freed a student charged with criminal defamation" over a tweet he posted about the physical appearance of the country's first lady.

Aminu Adamu was arrested at his university in northern Jigawa state on 18 November after Aisha Buhari filed a complaint and then remanded into custody until January.