Pakistan’s Supreme Court ordered that former Prime Minister Imran Khan be launched from custody on Thursday, providing a serious victory for the onetime chief who was arrested this week as a part of a corruption inquiry, and escalating a political disaster that has engulfed the nation.

In its ruling, the court docket declared that the authorities had unlawfully arrested Mr. Khan. His legal professionals had challenged the legality of the arrest within the court docket on Thursday morning and requested his launch.

The court docket’s resolution is a major political and authorized win for Mr. Khan, whose supporters have flooded the streets in droves since his arrest on Tuesday. It additionally units up a direct conflict between the Supreme Court and Pakistan’s navy, which is broadly thought-about to be the driving power behind his arrest.

Mr. Khan, the previous worldwide cricket star turned populist politician, was arrested in reference to a corruption case involving the switch of actual property — prices that he denies. His detention set off violent protests throughout the nation as hundreds of his helps got here to his protection, attacking navy installations and clashing with safety forces.

The public’s direct confrontations with Pakistan’s highly effective navy — which for many years has been an invisible hand wielding energy behind the federal government — was unlike anything the country has experienced in current reminiscence.

Tensions between Mr. Khan and navy leaders had been rising since he was ousted as prime minister in a vote of no confidence in April final yr. In current months, hundreds of supporters have attended his political gatherings, at which he referred to as for Pakistan to carry early basic elections. Supporters have additionally camped out outdoors his residence in Lahore, the nation’s second largest metropolis, to successfully function his private physique guards.

Mr. Khan is dealing with dozens of corruption prices, which he and his supporters have characterised as a misuse of the justice system by the federal government, led by Prime Minister Shahbaz Sharif, and the navy to maintain him out of politics.

Over the previous yr, Mr. Khan has rallied his supporters round accusations that the navy orchestrated his ouster and, most just lately, {that a} senior Pakistani navy intelligence basic was behind a shooting that wounded him in November.

On Monday, navy officers supplied a pointy rebuke to these accusations, and the authorities arrested him the subsequent day. Soon after, protesters flooded the streets, setting aflame and ransacking navy buildings throughout the nation — violent scenes that might as soon as be thought-about unimaginable in a nation the place few have dared to straight problem the navy.

In response, the authorities shut off the web and cellphone networks throughout most of Pakistan, deployed the military to a minimum of two provinces and arrested greater than 3,000 protesters. The authorities additionally arrested greater than a dozen key leaders in Mr. Khan’s political social gathering, together with his shut aide and former info minister, Fawad Chaudhry.

The navy’s media wing launched an announcement late Wednesday avowing a swift and “severe” response to protesters who attacked navy installations.

“The facilitators, planners and political rioters involved in these activities have been identified and now, strict action will be taken against them,” the assertion learn. “No one can be allowed to incite people and take the law into their hands.”

Zia ur-Rehman and Salman Masood contributed reporting.