Pakistan, Aug 15 (ANI): Clashes broke out on Friday as tens of thousands of Pakistani protesters from two anti-government movements converged on the capital, presenting the 15-month-old civilian government with its biggest challenge yet. Gunshots hit the vehicle of former cricket star and opposition politician Imran Khan as he led his supporters through the eastern city of Gujranwala. Residents brandishing ruling-party posters attacked his convoy, throwing shoes and stones. Khan was not injured, his spokeswoman said. Khan and populist cleric Tahir ul-Qadri are slowly leading separate processions towards Islamabad where they plan to occupy main streets until Prime Minister Nawaz Sharif resigns.