Singapore's Leader of the Opposition in parliament, Pritam Singh, has been stripped of his title by the prime minister following a vote by lawmakers.

The vote took place on Wednesday in parliament, which is overwhelmingly dominated by the ruling People's Action Party (PAP).

The move follows Singh's conviction for lying under oath to a parliamentary committee. Singh has consistently maintained his innocence.

He remains a member of parliament and secretary-general of the largest opposition party, Workers' Party (WP), but will lose privileges such as additional allowances and the right of first reply during parliamentary debates.

Singh's case stands out as one of the only criminal convictions against a sitting opposition lawmaker. He was also the first person to hold the title of Leader of the Opposition.