Imran Khan is stable after an attempt on his life and the former Pakistan prime minister is determined to continue his political struggle to press the government to call for an early election, his party has said.

Khan, 70, suffered a bullet injury in the right leg when a gun-wielding man fired a volley of bullets at him and others mounting on a container-mounted truck in the Wazirabad area of Punjab province, where he was leading a protest march against the government.