Nigeria's President Muhammadu Buhari is safe after an incident involving the security detail at his main residence in the capital, Abuja, according to his spokesperson.

Details are still sketchy but president's spokesperson Garba Shehu said the incident is under investigation.

"This is to assure everyone that the President and Commander-in-Chief of the Armed Forces are not, and was not at any time in any form of danger arising, either from deadly infections or the reported incident by security personnel which is currently under investigation," Mr Shehu said on Twitter.

He added that some staff had been arrested by the police.

The president's spokesperson said security officers assigned to the president's residence will also be investigated for their handling of weapons during the incident.

Local media report the incident happened on Friday and involved aides of first lady Aisha Buhari and guards at the presidential villa.

Mrs Buhari has since tweeted calling for the release of her aides.

especially on interstate travel without the necessary exemptions for movement of essentials. Anyone who does that should at the very least be made to under go a 14 days mandatory isolation no matter who the person is, no one should be above the law and the Police command

— Aisha M. Buhari (@aishambuhari) June 12, 2020