At least 18 people have been killed in a shooting at a hotel popular with Westerners in the Ivory Coast.
Four Europeans were reportedly amongst the dead in the attack on the L'Etoile du Sud hotel in the beach resort of Grand-Bassam on Sunday.
The Foreign Office said they were "urgently" trying to establish whether any Brits were involved.
David Cameron has said that he is "appalled" by the terrorist attack in the Ivory Coast and a blast in the Turkish capital Ankara which killed at least 32 people.
The Foreign Office has advised Britons to avoid the Grand Bassam resort in Ivory Coast in the wake of the terror attack.
"If you are in the vicinity follow the instructions of the security authorities, " the advice says.
It also warns there is a "high threat from terrorism" across the Ivory Coast and says travellers should be vigilant.
"Attacks could be indiscriminate, including in places visited by foreigners."
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.