A funeral was held for Mr Kyari on 18 April in Abuja, but images have been shared of people huddling around his grave.

Officials have admitted the service was inconsistent with government rules on public gatherings and social distancing in the city.

Authorities have refrained from a nationwide lockdown, but strict measures have been in place since 30 March in Abuja, Lagos and Ogun states. Most businesses have been forced to close because of the new rules, and the government has banned large gatherings and all but essential travel.

Over 665 cases of coronavirus have been reported in Nigeria, along with 22 virus-related deaths.