Visa rules are frequently the source of disinformation in Nigeria, especially hoaxes about tighter restrictions imposed on nationals from the West African nation. In September, posts circulated on social media claiming Qatar had banned single Nigerian men from visiting the country.

An Oct. 11 Facebook post (direct link, archive link) shows a photo of Qatar's head of state along with a warning he supposedly made about his country’s energy exports. “The Emir of Qatar, Sheikh Tamim bin Hamad al-Thani, has threatened that if the ...