Updated

Turkey's main opposition party has recalled parliament for an extraordinary session to discuss allegations of corruption against four former ministers that have damaged Prime Minister Recep Tayyip Erdogan's government ahead of local elections on March 30.

Opposition parties will try on Wednesday to force parliament to read a prosecutors' case against the four — which would put evidence against the government into the public domain, exposing Erdogan to further embarrassment before the elections.

The documents have not been made public. But papers leaked on the Internet and purported to be the prosecutors' files accuse three ministers of facilitating an Iranian businessman's money transfers to Iran in return for bribes.

Erdogan denies corruption and insists the allegations are a plot by followers of an U.S.-based Muslim cleric to undermine his government.