A Foreign Office is aware of the incident during an England World Cup match in which an England fan had his ear bitten off, and has provided "consular assistance," a spokesperson said.
We are aware of an incident in Sao Paulo on the June 19 involving a British national, and we provided consular assistance.
More top news
Cloud and outbreaks of rain will ease away eastwards during the morning, clearing the east coast around midday with sunny spells developing.
Police and emergency services are attending the scene.
Rebel-held east remains at risk while the pumping station supplying the western part of the city is once again in operation.