"Over 100 police commandos will be deployed at the airport on Friday to avert any untoward incident", senior Lahore police officer Sardar Asif said.
Security has been beefed up at New Islamabad International Airport ahead of former prime minister Nawaz Sharif's arrival.
A Pakistani accountability court on Friday sentenced Sharif in absentia to 10 years in prison for corrupt practices linked to his family's purchase of upscale London flats.
A spokesman for Sharif's Pakistan Muslim League-Nawaz (PML-N) party confirmed they were arrested soon afterwards.
"Everyone is involved in this blatant rigging from the caretaker Punjab chief minister to the caretaker interior minister and police officials", the PML-N president asserted, as he warned the officials concerned of "fair judgement" if the PML-N is voted to power again.
The younger Sharif has called upon Mr. Askari for the immediate release of the detained workers.
PML-N leaders say authorities have launched a crackdown against union council leaders, the street-level party workers who bring out people on the streets, detaining hundreds of workers over the last 36 hours.
Recent opinion polls suggest PML-N is losing its lead nationally to the Pakistan Tehreek-e-Insaf (PTI) party of arch-rival Khan, whose anti-corruption message has resonated with many Pakistanis.
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