Police used teargas shells and water cannons to disperse the angry followers, officials said.
Barricades were put up about three kilometres from the sprawling headquarters of the Dera. Security personnel were equipped with teargas shells and water cannons.
The mounted police was also pressed into service.
After the verdict was announced, thousands of people came out of the headquarters and reached the barricades, police said.
Plumes of dark smoke could be seen at a distance near the headquarters. It is suspected that the supporters may have torched some vehicles.
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