Biggest party quits coalition

Move increases chance that President Rousseff will be impeached in the coming months

Brazil's largest party abandoned President Dilma Rousseff's governing coalition on Tuesday, making it tougher for her to survive mounting pressure in Congress for her impeachment.

The Brazilian Democratic Movement Party, known as the PMDB, said after a meeting that six Cabinet ministers belonging to the party as well as some 600 federal government employees who are members must step down. The announcement was made after more than 100 lawmakers approved the decision, according to the press office of Romero Juca, an influential senator.