Pakistani authorities have placed shipping containers on key roads and highways leading to the capital and suspended cellphone service in Islamabad in an attempt to prevent supporters of imprisoned former Prime Minister Imran Khan from holding a rally seeking his release.

Chowk, countering heavy police presence and internet cuts. The Islamabad high court has ordered a designated protest zone. Khan's PTI challenges the ruling coalition, claiming election fraud and facing government crackdowns.

Pakistan's capital was locked down on Saturday, swarmed by security forces with mobile internet cut as supporters of jailed ex-prime minister Imran Khan attempted to seize the streets in protest.