David Hundeyin, a Nigerian independent journalist, has been detained in Harare Airport, Zimbabwe.
Mr Hundeyin raised the alarm over his detention at the airport in a series of tweets on Wednesday night.
“I landed in Zimbabwe earlier today, and I have been detained at Harare Airport inside a smelly locked room for nearly 7 hours,” he said.
“They said that despite using the travel document of a country with a visa-free relationship, my nationality is still Nigerian, and thus, I need a visa.”
Sharing photos of himself and another lady, Mr Hundeyin said he and the Ugandan lady were locked in a room for hours.
“Alongside a lady from Uganda (also a visa-free country), I have been locked in a room with no windows or toilet, plus a bottle of pee on the floor,” Mr Hundeyin said.
