Men on a bike ride past a burning police vehicle during a protest by Pakistan Tehreek-e-Insaf party activists and supporters of former Pakistan's Prime Minister Imran against the arrest of their leader, in Quetta on May 9. Police fired water cannon and tear gas on May 9 to quell protests that erupted in several cities across Pakistan, hours after former prime minister Imran Khan was arrested in connection with a graft case

A cop fires a tear gas shells towards Pakistan Tehreek-e-Insaf (PTI) party activists and supporters of former Pakistan's Prime Minister Imran during a protest against the arrest of their leader in Karachi on May 9. Police fired water cannon and tear gas on May 9 to quell protests that erupted in several cities across Pakistan, hours after former prime minister Imran Khan was arrested in connection with a graft case

A Pakistan Tehreek-e-Insaf (PTI) party activist and supporter of former Pakistan's Prime Minister Imran throws back a tear gas shell towards police during a protest against the arrest of their leader, in Quetta on May 9. Police fired water cannon and tear gas on May 9 to quell protests that erupted in several cities across Pakistan, hours after former prime minister Imran Khan was arrested in connection with a graft case

Motorists ride past burnt vehicles in front of the Zaman Park, a day after protests by Pakistan Tehreek-e-Insaf (PTI) party activists and supporters of former Pakistan's Prime Minister Imran Khan, in Lahore on May 10

Pakistan Tehreek-e-Insaf (PTI) party activists and supporters of Imran Khan shout slogans during a protest against the arrest of their leader in Peshawar on May 10. Khan appeared in a special court at the capital's police headquarters on May 10 to answer graft charges, local media reported, a day after his arrest prompted violent nationwide protests