Thousands of supporters of Pakistan’s imprisoned former premier Imran Khan have defied a lockdown and mass arrests to head to the capital to demand his release. Khan, who has been in jail for over a year and faces more than 150 criminal cases, remains popular. His party, Pakistan Tehreek-e-Insaf, says the cases are politically motivated. Monday's “long march” comes ahead of a visit by Belarusian President Alexander Lukashenko to Islamabad. Security officials say they expect between 9,000-11,000 demonstrators. The party also said Khan’s wife, Bushra Bibi, who was recently released on bail in a graft case, will lead the march.