Humorist and Buja FM radio host Alfred Aubin Mugenzi was arrested on Tuesday evening by Burundi's National Intelligence Service (known by its French acronym, SNR) and charged with insulting President Pierre Nkurunziza.
He was apprehended at a hotel in Muramvya, 50 kilometres east of the capital, while on a promotional tour for a beer company.
"He was transferred to Bujumbura and is being held in the SNR dungeons, but no one has been allowed to see him", said a concerned relative, who did not want to be named for fear of repercussions.
SNR officers told the relative that Mugenzi was arrested "for contempt of the head of state" after a skit he performed in neighbouring Rwanda last year, in which he lampooned football-mad third-term Nkurunziza, showing him refusing to leave the pitch despite receiving two yellow cards.
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Nkurunziza's refusal to stand down after two terms and instead run for a controversial third mandate in 2015 triggered bloody unrest, a failed military coup and months of violence that has killed hundreds of people and driven a quarter of a million to flee the country.
An intelligence official confirmed Mugenzi's arrest saying the comic routine was "insulting the president".
"He will soon be released, this time," the official added.