Pakistan's ousted prime minister Imran Khan on Sunday vowed to take legal action against “every single officer” involved in a raid on his Zaman Park residence here and the brutal beating of his party workers during the search operation. While Khan was in Islamabad to mark his presence at a court on Saturday, over 10,000 armed Punjab police personnel launched a major operation at his Zaman Park residence and arrested dozens of his supporters. Police claimed to have seized weapons and petrol bombs from Khan's house. Khan’s supporters managed to take control of his residence late Saturday night when the Pakistan Tehreek-e-Insaf (PTI) chairman returned from Islamabad after attending the hearing in the Toshakhana case.