At least four dead and dozens injured in Pakistan's Peshawar amid protests following former Pakistan Prime Minister Imran Khan's arrest, according to a Pakistani journalist.

Four deaths and more than a dozen injuries have been reported in Peshawar, reports DAWN.com quoting journalist Iftikhar Firdous of a local daily.

He said the bodies and injured were being brought to the Lady Reading Hospital, adding that many of them had not yet been identified.

Firdous also said that the road situation in the city was getting worse.

Meanwhile, PTI Vice Chairman Shah Mahmood Qureshi has been arrested in Islamabad, reports Geo News.

According to DawnNewsTV, the PTI leader has been arrested from Red Zone in the capital.

An ambulance was wrecked by protesters after being set ablaze and demolished near Jinnah Park on Peshawar's GT road in Khyber Pakhtunkhwa, according to a statement from an Edhi representative.

Those who were hurt were being taken to the hospital in the ambulance. The official added that another ambulance was also damaged but that no fatalities had been reported.

The police have said that nearly 270 people have been arrested in Karachi so far after protests broke out in the city following Imran Khan's arrest.

In another development, armed forces have been deployed in Punjab to maintain law and order situation following Imran's arrest, reports DAWN.

In Pakistan's Sindh province, section 144 — a legal measure which bans gatherings of people — has been imposed, a notification said.

Earlier on Wednesday (10 May), Former Pakistani prime minister Imran Khan was on Wednesday indicted by a court on charges that he unlawfully sold state gifts during his premiership between 2018-22, broadcaster Geo News reported.

The indictment followed a decision by the Election Commission of Pakistan last October which found Khan guilty of illegally selling state gifts and barred him from holding public office until the next election. He has denied any wrongdoing.

Khan was arrested on Tuesday in another corruption case related to property. The action by Pakistan's anti-corruption body has led to violent protests across the country, with at least two provinces asking the federal government to deploy troops to restore order.