A Nigerian man has been jailed after making a Facebook comment which put a curse on a governor in the north of the country, police have said.
Moukhtar Ibrahim Aminu was arrested in Jigawa state for defamation after making the declaration about Governor Sule Lamido.
The comment, posted on January 18 on the social networking website in the local Hausa language, said: "Allah curse Sule Lamido and all his useless friends."
Mr Lamido's spokesman declined to comment.
The arrest comes as Nigeria approaches a crucial April presidential election.
While newspapers do publish columns critical of politicians, bribes paid to journalists help control coverage in Africa's most populous nation.
Those who do not fall in line often face threats and beatings.