Islamabad: Pakistan's opposition parties have held a rally in the capital calling for the head of the elections oversight body to step down following allegations of fraud and irregularities in last month's elections.

Wednesday's protest, involving hundreds of supporters, came hours after the caretaker government said it would try to transfer power on August 14, when the nation celebrates Independence Day. 

Apart from the Pakistan People’s Party (PPP) and the Pakistan Muslim League-Nawaz (PML-N), the opposition alliance comprises Awami National Party (ANP), Qaumi Watan Party (QWP), Pakhtunkhwa Milli Awami Party (PkMAP), National Party (NP) and Muttahida Majlis-i-Amal (MMA).

Imran Khan, a former cricket star whose party won the most votes, is expected to be the next prime minister.

Khan's opponents say the military intervened in the July 25 elections on his behalf, allegations denied by the army. Khan has vowed to investigate the charges.
Khan is also facing probes by the anti-graft bureau in connection with his alleged misuse of a government helicopter.

A European Union team that monitored the balloting has said the election results were largely credible.