Pritam Singh, Singapore's Leader of the Opposition in parliament, 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.

Critics have previously accused Singapore's government of using the judiciary to go after its political opponents - charges authorities have always denied.

On Wednesday, Indranee Rajah, the Leader of the House who had initiated the debate, said that Singh's lies strike at the trust Singaporeans place in parliament and accused him of failing to take responsibility.

Singh defended himself during the debate, saying that his conscience remains clear and disagreed with the debate's resolution that his behaviour was dishonourable and unbecoming. He also vowed to continue his work as an MP.

After three hours of debate, parliament backed a motion that agreed Singh should not be the Leader of the Opposition. All 11 present WP members voted against it.

The parliament also agreed to review the implications for two other WP lawmakers at another time.

On Thursday, Prime Minister Lawrence Wong said in light of Singh's conviction and the vote that it was no longer tenable for him to continue as the Leader of the Opposition.

He also invited the WP to nominate another of their MPs to take the title.

In response to queries, Singh said simply: #WeContinue.

The WP stated it will consider the decision and respond in due course while planning an internal review on Singh's conduct.

The party holds 12 of the 108 seats in Singapore's parliament.

The saga began in 2021 when WP lawmaker Raeesah Khan claimed to have witnessed police misbehave towards a sexual assault victim. She later admitted her story was false, claiming Singh and other leaders had urged her to persist with the narrative.

Khan resigned from the party and parliament, facing fines for her actions, while a case was brought against Singh for lying during committee hearings related to her statements. A court convicted him last February, and he lost an appeal in December.