Portugal has slid back into more political uncertainty after its third government fell in as many years when Prime Minister Luis Montenegro lost a confidence vote in Parliament.

Portugal's parliament will vote later on Tuesday on a motion of confidence in the minority centre-right government, which looks set to be rejected, triggering the country's third early general election in just over three years.

Portugal’s parliament on Tuesday rejected the vote of confidence presented by the center-right government of Prime Minister Luís Montenegro, leaving the door open to possible early elections. The unicameral assembly rejected the motion with the votes of the Socialist Party (PS),