Pakistani security forces, including the military, patrolled streets across the country Thursday, detaining supporters of former Prime Minister Imran Khan amid violent protests over his arrest on corruption charges.

Khan's arrest on Tuesday was the culmination of months of political crisis that saw the ousted leader wage a campaign of defiance against the powerful military.

The arrest has enraged supporters of his Pakistan Tehreek-e-Insaf (PTI) party. For two days, thousands of people have taken to the streets in protest around Pakistan, and violent clashes with security forces have erupted.

At least nine people have died in protest-related incidents, police and hospitals said.

Hundreds of police officers have been injured and more than 2,000 people arrested across the country, mostly in Punjab and Khyber Pakhtunkhwa provinces, police added.

At least seven officials from PTI's central leadership accused of orchestrating the protests were also detained.

On Thursday, police with batons and riot shields were deployed to quell any further unrest.

"If they think that the arrest of Imran Khan will demoralize us, then they are hugely mistaken," said protester Niaz Ali on Wednesday in Peshawar, where demonstrators were accused of torching several monuments and government buildings.

"We stand with Imran Khan and will support him till death."

The former cricket superstar, who remains wildly popular, was ousted in April 2022 in a no-confidence vote in parliament after he lost the support of Pakistan's military.

Khan has since said the dozens of cases brought against him following his ousting are part of an effort by the government and the army to prevent him from returning to power ahead of elections due in the autumn.

The government on Wednesday approved the deployment of the army in two provinces – including Punjab, the most populous – and in the capital to restore peace.

The military earlier issued a strongly worded statement saying it was exercising "extreme restraint."

"In its lust for power, this group has done what the country's eternal enemies could not do for 75 years," the statement said, referring to Khan's supporters.

It warned of a "severe reaction" to any further attacks on state and military facilities and that the responsibility will lie with "a group that wants to push Pakistan into civil war."

Khan's party dismissed the statement as "contrary to facts and the situation on the ground."

Internet cut, social media blocked

Islamabad police said troops had overnight entered the capital's sensitive "red zone" where government buildings are housed.

The Interior Ministry has ordered mobile internet services cut and restricted access to social media sites Twitter, Facebook and YouTube, Pakistan's communications agency said.

Authorities have also ordered schools closed nationwide – with year-end exams canceled.

"People should protest but it doesn't mean setting fire and damaging government property, or harming poor people and damaging their cars," said 45-year-old Syed Muzaffar Shah in the city of Peshawar.

The country is struggling through a severe economic downturn, brought about in part by the deepening political instability of the past year, with the rupee plummeting to a record low against the dollar Thursday.

Red line

Khan's arrest came hours after the military rebuked him for alleging that a senior officer was involved in a plot to assassinate him. The army denied the accusation.

Criticism of Pakistan's military establishment is considered a red line.

Pakistani politicians have frequently been arrested and jailed since the country's founding in 1947.

But few have so directly challenged a military that holds significant influence over domestic politics and foreign policy and that has staged at least three coups and ruled for more than three decades.

Khan on Wednesday went before a specially convened court which remanded him in custody for eight days following a request by Pakistan's top anti-corruption agency, the National Accountability Bureau, Ali Bukhari, one of his lawyers, told AFP.

The agency earlier said Khan had ignored repeated court summons over alleged corruption linked to a trust fund he set up with his wife, renowned for being a spiritual healer.

Khan was also indicted without being arrested over separate accusations he mislead officials about gifts he received from foreign leaders while in power, according to the Election Commission of Pakistan, which has filed the case.

U.N. Secretary-General Antonio Guterres on Wednesday called on all parties in the crisis to refrain from violence.