Former UK ambassador to the US Peter Mandelson has been released on bail after being probed by cops over allegations he shared confidential government information with the convicted sex offender Jeffrey Epstein.

Mandelson, who was fired from the top diplomatic job last year over his links to Epstein, was released from a southwest London police station at 1.15 a.m. Tuesday – around nine hours after plain-clothed officers swooped on his home. 

He was arrested on allegations of suspected misconduct in public office – the same offense Andrew Mountbatten-Windsor was hauled into custody over last week. If convicted, he could face a maximum sentence of life in prison.

Mandelson, who wasn’t named by British cops when he was arrested in line with strict crime laws, was led to an unmarked police car and whisked away for questioning.

He would’ve had his rights read, DNA swabs taken, fingerprints and a mugshot — just like any other suspect, according to the Telegraph.

Officers would’ve removed any items from Mandelson that he could use to injure himself.

A former Metropolitan Police officer told the outlet Mandelson would have been allowed regular breaks while in custody, and given the option to reply “no comment” when quizzed by cops.

Cops and prosecutors are still in talks over potential charges, as reported by the BBC.

Mandelson, a ruthless political operator described by some as the “Prince of Darkness,” allegedly leaked market-sensitive data to Epstein in 2009 while serving in the British government, according to damning emails released by the Department of Justice.

He allegedly spoke about ways the UK could raise money following the financial crisis, and told Epstein he would lobby government officials to reduce a bankers bonus tax.

Mandelson has always denied wrongdoing over his links to Epstein.

Earlier this month, officers searched two homes linked to Mandelson – one property in Wiltshire, southwest England, and the other in Camden, north London.

Calls urging UK Prime Minister Keir Starmer to resign have intensified over his appointment of Mandelson as ambassador to Washington.

Rumors have swirled that Starmer could face a leadership challenge in the coming months. Starmer has historically low approval ratings and the Labour party is languishing in election polls.

Some left-wing politicians from within Starmer’s Labour party urged him not to appoint Mandelson in the first place due to his ties with Epstein.

Starmer’s judgement has been heavily scrutinized over the appointment; the British government is set to release the first set of files relating to the appointment.

Morgan McSweeney, Starmer’s former chief of staff, quit over the Mandelson fallout.

“The decision to appoint Peter Mandelson was wrong. He has damaged our party, our country and trust in politics itself,” McSweeney said in his resignation statement.

Mandelson served under former UK Prime Ministers Tony Blair and Gordon Brown. He had to resign twice from the Blair government due to financial or ethical impropriety allegations. Mandelson denied wrongdoing but acknowledged mistakes.

With Post wires