Rio de Janeiro, Brazil, 24 February 2016: The state government of Rio de Janeiro met the press to show the progress of construction of Line 4 subway, which will connect the south of the city in Ipanema and Leblon to the west of the city, in Barra da Tijuca. Recently the Mayor of Rio Eduardo Paes sent e-mail to the International Olympic Committee (IOC) warning about the risk of the work not be read