LAHORE: City police have increased the number of pickets in the city following orders from President Pervez Musharraf to crackdown on extremists. Police set up pickets on several city roads on Saturday checking documents of motorcyclists and motorists. "We have increased our vigilance on the orders of the higher authorities," a constable manning a picket told APP. The president, addressing 200 senior police and law enforcement officials on Friday, directed them to launch a countrywide campaign against extremists. However, the increased number of pickets caused traffic jams. "While it is good to ensure public safety and security, these barriers do create traffic problems," said an irate motorist stuck in traffic.