LAHORE: Pakistan Tehreek-e-Insaf (PTI) Chairman Imran Khan accused the ruling Pakistan Muslim League-Nawaz (PML-N) of planning to carry out rigging in the upcoming by-election of NA-122 at women polling stations. "I want to ask my tigresses to remain alert in order to foil PML-N's plans to rig the by-election," Khan said while addressing a large gathering of supporters at Doongi Ground in Samanaabad area of Lahore.