ISLAMABAD (Reuters) - Pakistan Cricket Board (PCB) chairman Najam Sethi, who has a history of clashes with new prime minister and former national captain Imran Khan, resigned from his post on Monday and was swiftly replaced.

FILE PHOTO: Labourers, who set up the venue, sit under a wall with a billboard displaying a photo of Imran Khan, chairman of the Pakistan Tehreek-e-Insaf (PTI), political party, as they listen to him during a campaign rally ahead of general elections in Karachi, Pakistan July 22, 2018. REUTERS/Akhtar Soomro/File Photo

Pakistani cricket enjoyed a golden period under Sethi’s management, winning the ICC Champions Trophy and shooting up the global rankings to become the number one team in T20 internationals, cricket’s shortest format.

But former cricket star Khan, whose party won power in a national election last month, fell out with Sethi during the previous ballot in 2013, when Sethi was in charge of an interim provincial government and Khan accused him of rigging the vote in favor of former Prime Minister Nawaz Sharif.

Sethi was the caretaker chief minister of the vast Punjab province when Sharif won a landslide victory. Khan repeatedly alleged Sethi was behind rigging in 35 constituencies, prompting Sethi to file a defamation case, which is pending in court.

“I was waiting for the new Prime Minister to take oath before submitting my resignation as PCB Chairman, which I have done today,” Sethi tweeted along with a copy of his resignation sent to Kahn.

Sethi, one of Pakistan’s best known journalists, angered many of Khan’s supporters for writing articles about the military’s alleged role in propelling Khan to power.

Khan denies colluding with Pakistan’s powerful army, which has a history of dismissing and promoting politicians it favors.

Khan immediately named Ehsan Mani, a former International Cricket Council chief, as Sethi’s replacement. Mani brought vast and valuable experience to the job, the prime minister tweeted.

Sethi was credited with helping bring about an end to Pakistan’s lengthy isolation from international cricket, which began in 2009 when gunmen attacked a bus carrying the Sri Lanka team from their hotel to Lahore’s Gaddafi stadium, injuring six players and killing six security personnel and two civilians.

The incident forced Pakistan to play their home matches in the United Arab Emirates and the country has since remained starved of international cricket at home, apart from a limited-overs tour by Zimbabwe in 2015.

Sethi also introduced the Pakistan Super League (PSL), based on the franchise model of the Indian Premier League and Australia’s Big Bash League, and made it a huge success.

His role in reviving the fortunes of the national team drew praise, and the country’s influential Dawn newspaper published an editorial last month urging Khan not to interfere with the current cricketing set-up.

The News on Sunday meanwhile urged Sethi to seize the moral high ground by stepping aside in the interests of Pakistan cricket to avoid a damaging “war of succession”.