Brazil’s government is in deeper chaos after interim speaker of the lower house annuls key vote that could have led to President Dilma Rousseff's impeachment.

Brazil’s government is in deeper chaos after interim speaker of the lower house annuls key vote that could have led to President Dilma Rousseff's impeachment.

Key Rousseff impeachment vote annulled

By Ashley Fantz, CNN

Updated 1659 GMT (0059 HKT) May 9, 2016

Brazilian President Dilma Rousseff

(CNN)Brazil's scandal-plagued government is in deeper chaos after the interim Speaker of the Lower House on Monday annulled a key vote that could have led to President Dilma Rousseff facing impeachment.

It's now unclear if the Senate may take up the Lower House vote this week to move ahead with proceedings that could remove Rousseff from power for six months.

The Lower House had voted overwhelmingly for the investigation, and could push for that again, or the Supreme Court could overturn the Speaker's mandate. And separately, the Senate impeachment commission leader says that panel may proceed with their own vote on heading toward an impeachment trial regardless.

CNN's Shasta Darlington contributed to this report.