Embattled prime minister claims voice recordings of him ordering his son to dispose of large sums of cash are fabricated

Turkish opposition calls for Erdogan to be investigated for corruption

A Turkish opposition party leader has called on prosecutors to launch a corruption investigation into the prime minister, Recep Tayyip Erdogan, following the disclosure of alleged voice recordings in which he orders his son to dispose of vast amounts of cash.

Erdogan has met Turkey's intelligence chief after the audio of two men discussing how to get rid of money from a home circulated on the internet on Monday.

Erdogan's office claims the tapes were fabricated. They have vowed to take legal action against the perpetrators.

Devlet Bahceli, leader of Turkey's far-right Nationalist Action party, called the recordings "mind-blowing" and urged prosecutors and other judicial bodies to intervene.

He said Erdogan should "not even think about" escaping blame by claiming the tapes were edited.

Turkey's main opposition party, the Republican People's party, held an emergency meeting late on Monday and called on Erdogan to resign, saying the government had lost its legitimacy.

"Turkey cannot carry on with this blemish and this burden," senior party official Haluk Koc said.

The audio recordings reportedly took place on 17 December, following the arrests of three cabinet ministers' sons in a police corruption and bribery probe.

Erdogan insists the corruption investigation targeting people close to him is a conspiracy against his government ahead of local elections in March and an August presidential election .

The government says the investigations were orchestrated by followers of a moderate Islamic movement, led by US-based cleric Fethullah Gulen, which has allegedly infiltrated Turkey's police and judiciary.