Nigerian Nobel laureate Wole Soyinka has said the US revoked his visa and banned him from the country.
The 91-year-old author, who won the Nobel Prize for literature in 1986, said the US consulate asked him to bring in his passport so his visa could be cancelled in person as new unspecified information had come to light.
Soyinka called the invitation a "rather curious love letter from an embassy" in a news conference held on Tuesday and told organisations hoping to invite him to the US "not to waste their time".
The US embassy in Nigeria has said it cannot comment on individual cases.
The Nobel laureate has previously held permanent residency in the US but renounced it in 2016, tearing up his green card in protest of President Donald Trump's election.
