Pakistan's interior minister on Tuesday issued a warning to protesters who had taken to the streets of major cities across the country following the arrest of former prime minister Imran Khan. Khan was detained and dragged from court earlier in the day as he appeared to face charges in multiple graft cases. The arrest represented the latest confrontation to roil Pakistan, which has seen former prime ministers arrested over the years and interventions by its powerful military. At least one person was reported killed in clashes between protesters and the military in Quetta, the capital of Baluchistan province, with another five people wounded there, while about 15 injuries were reported amid similar violence in Karachi, Peshawar, Rawalpindi and Lahore. Police fired tear gas to disperse demonstrations. Khan was removed from the Islamabad High Court by security agents from the National Accountability Bureau, said Fawad Chaudhry, a senior official with his Pakistan Tehreek-e-Insaf party, and then shoved into an armored car and whisked away. He was taken to the garrison city of Rawalpindi, near Islamabad, for questioning at the offices of the National Accountability Bureau, according to police and government officials. He also was to undergo a routine medical checkup, police said. Khan had arrived at the Islamabad High Court earlier in the day from nearby Lahore, where he lives, to face charges in the graft cases.