Pakistan Muslim League-Nawaz (PML-N) workers on Saturday clashed with the security guards of Punjab Chief Minister Shahbaz Sharif during his visit here. The clash broke out when police stopped local MNA Abid Sher Ali from boarding a newly opened CNG bus. Shahbaz Sharif and Law Minister Rana Sanaullah were already present in the bus. Angry PML-N workers stood in front of the bus in protest against stopping Abid Sher Ali from riding the bus. However, as the situation became tense, the chief minister left the bus. Earlier, Shahbaz reached Faisalabad to open a new CNG bus service in the city.