/ Updated  / Source: Associated Press
By Associated Press

The acting speaker of the lower house of Brazil's Congress has annulled last month's vote on impeachment, delaying the process against embattled President Dilma Rousseff.

Brazilian President Dilma Rousseff attends the launching ceremony of a new stage of the state-subsidized housing program at Planalto Palace in Brasilia on May 6, 2016.EVARISTO SA / AFP - Getty Images

A Senate vote on whether to accept the impeachment process had been scheduled for Wednesday. But Monday's request by Waldir Maranhao means the matter goes back to the Chamber of Deputies.

The reasoning for the decision was unclear.

Related: Brazil Senate Committee Votes for Rousseff Impeachment Trial

The decision is a victory for Rousseff, who faced suspension from office had the Senate taken up the matter and ruled against her.

Follow NBC News Latino on Facebook, Twitter and Instagram.