Tension prevailed and clashes began in Pakistan's Gujaranwala as unknown plainclothes men fired at Tehreek-e-Insaf party cheif Imran Khan's vehicle.
While Imran Khan was not hurt and is safe, his supporters went on a rampage and clashed with political rivals.
The firing lasted for almost 30 minutes. There was stone-pelting too. Khan's vehicle was not bullet proof.
Imran Khan has been leading anti-government protest march and the march was to conclude at Lahore on August 14, Pakistan's independence day. He is joined by Pakistani Awami Tehreek chief and cleric Tahir-ul-Qadri.
Already, roads in Islamabad have been blocked and mobile phone services have been suspended in areas through which the protest march is scheduled to progress.