Nigeria has announced its first confirmed case of the Delta variant of Covid-19.

The variant was detected in a traveller following a routine travel test required of all international visitors. An analysis in a lab in the capital Abuja confirmed the variant, the country's Centre for Disease Control (NCDC) said on Thursday evening.

The authorities have not mentioned which country the infected person was travelling from.

Nigeria has so far recorded nearly 170,000 cases of coronavirus with more than 2,000 deaths.

The the World Health Organization (WHO) has identified the Delta variant as a variant of concern.

It’s more transmissible and has so far spread to dozens of countries around the world, driving outbreaks in places like the UK.