BRASILIA, April 19 -- Brazilian Senate President Renan Calheiros announced Tuesday that a special Senate commission, tasked with assessing the impeachment against President Dilma Rousseff, would be voted in on April 25 and begin working the next day.

The lower house of parliament's approval to proceed with Rousseff's impeachment Sunday put pressure on Calheiros to declare a timetable for the Senate's next move, while Calheiros cautioned that "we are not seeking to make news every day, we are making history."

The Senate will name the members of the commission on April 26, with the majority Brazilian Democratic Movement Party holding five seats, the Workers' Party, to which Rousseff belongs, and the opposition Brazilian Social Democracy Party holding four seats, and other parties dividing the eight remaining seats.

Once in place, the commission will have 48 hours to elect its president and rapporteur and 10 days to elaborate a recommendation on the viability of Rousseff's impeachment process.