LAHORE - Police are cracking down on the Pakistan Tehreek-e-Insaf (PTI) workers across Punjab ahead of ‘Azadi March’ today. Also, the roads leading to Motorway Interchange have been blocked with containers, forcing the workers to take alternative routes. Meantime, bus and wagon stands have also been sealed. At least 77 political workers of Imran Khan have been held in lockups during the last 24 hours in Sahiwal. Another 30 workers have been collared in police crackdown in Sargodha.