Supporters of Pakistan's former Prime Minister Imran Khan, protesting against his arrest, have entered the compound of the army commanders' residence in Lahore. Media footage showed them also storming the army headquarters in Rawalpindi. In Peshawar, the Radio Pakistan building has also been set on fire. The 70-year-old cricketer-turned-politician was arrested earlier today as he was entering the Islamabad High Court for a hearing in a case.