Omoyele Sowore was arrested in his residence in the early hours of Saturday, his associate said in a statement.
“Operatives of the Department of State Services have arrested pro-democracy activist and the convener of #RevolutionNow Protests, Omoyele Sowore.
“It was gathered that Sowore was picked up at his apartment in the early hours of Saturday.”
Sowore said on Friday that he was told by a friend that he was under “heavy surveillance” of security agencies.
He posted a distress tweet at 1:25 am confirming that DSS operatives were at his house. A follow-up tweet was truncated.
SaharaReporters, which he publishes, said his phone was taken from him and that his arrest may be connected to his plans to lead a nationwide protest against the government.
“His whereabouts is currently unknown,” SaharaReporters said.