The Pakistani opposition leader Shah Mahmood Qureshi was detained on Saturday, his Pakistan Tehreek-e-Insaf (PTI) party said, just hours after he said it would challenge any delay to the country’s election in the courts. Party spokesperson Zulfi Bukhari told Reuters the specific reason for the detention of Qureshi, twice Pakistan’s foreign minister, was not immediately clear. The caretaker information minister did not respond to a request for comment. Bukhari condemned the arrest on the social media platform X, saying Qureshi was “arrested for doing a press conference and reaffirming PTI stance against all tyranny and pre-poll rigging that is going on currently in Pakistan”. The PTI party chair, Imran Khan, is currently serving three years in jail after being convicted on graft charges and is barred from contesting any election for five years. He denies any wrongdoing. Khan won the last election in 2018 and became prime minister until he was ousted in a no-confidence vote in 2022. The election is meant to be held within 90 days of parliament being dissolved – which will mean by November – but uncertainty looms over the date as the nation grapples with constitutional, political and economic crises. The outgoing government approved a census in its final days, meaning new electoral boundaries must be drawn up by the election commission. The exercise of drawing fresh boundaries for hundreds of federal and provincial constituencies in a country of 241 million people may take six months or more, according to a former commission official. The election commission said on Thursday that new constituencies would be finalised by 14 December, state television reported. After that, the commission will confirm an election date. Electoral experts have suggested the process could push the nationwide vote back several months, possibly until February. “It will be unconstitutional if the 90 days deadline is breached,” Qureshi, who has led the PTI party following Khan’s arrest, told a press conference. He said the party planned to contest any delay at the supreme court. Political analysts say that if the current caretaker set-up stretches beyond its constitutional tenure, a prolonged period without an elected government would allow the military, which ruled the country directly for more than three decades of its 76-year existence, to consolidate control. Anwaar-ul-Haq Kakar, a little-known politician who is believed to be close to the military, was sworn in as prime minister on Monday. Caretakers are usually limited to overseeing elections, but Kakar’s setup is the most empowered in Pakistan’s history thanks to legislation that allows him to make policy decisions on economic matters. The move is ostensibly aimed at keeping on track a nine-month $3bn International Monetary Fund bailout secured in June. At least one of three programme reviews falls during the caretaker period, more if elections are delayed.