"I didn't take sides, but it looked like another rigged election. It looked very bad to me," Trump told reporters.

Trump pushes unsubstantiated claims about Brazil's presidential vote but says he 'didn't take sides' in the race.

Flavio Bolsonaro himself has refused to concede defeat in Sunday's presidential election, saying he would seek the annulment of Lula's victory.

US President casts doubt on integrity of South American nation’s election result over extension of voting hours