Riot police have apparently fired tear gas at striking metro workers in Sao Paulo, three days before the World Cup kicks off in the city.
Correspondent Lulu Garcia-Navarro, for the public radio network NPR, tweeted this picture:
More top news
Heavy rain spreading eastwards overnight
The terminally ill boy's mother, Connie Yates, burst into tears as a lawyer reveals Charlie's latest brain scan makes for "sad reading".
White House Press Secretary Sean Spicer has resigned after just six months, it has been announced.