Brazilian riot police use tear gas to disperse striking staff

Brazilian police have used tear gas, rubber bullets and stun grenades to disperse striking workers inside a subway station, adding to fears that labour troubles could disrupt the World Cup when it opens in six days.

At least three union members were injured in the Sao Paulo clash, according to Paulo Iannone, a union spokesman.

Operators of the subway and overland trains seeking higher wages are on strike for a second day, with no indication that it will end soon.