Turkish Prime Minister Recep Tayyip Erdogan has condemned leaked recordings of him and his son allegedly discussing how to hide large sums of money as a "vile attack" by rivals, as calls mounted for his beleaguered government to resign.
"What was done is a vile... and a treacherous attack against the prime minister of the Republic of Turkey. It will not go unpunished," Erdogan told his ruling party MPs in parliament.
The phone conversations, posted on YouTube, allegedly reveal Erdogan asking his son Bilal to turn millions of euros in cash stashed at several houses into "zero".
Bilal at one point can be heard saying: "There is 30 million euros ($A46 million) more."
The leaked discussions, which could not be independently verified, were said to have taken place on December 17, the same day key Erdogan allies were caught up in police raids linked to a corruption investigation that has rocked the government.
In one conversation, Erdogan can supposedly be heard briefing Bilal about the raids, which saw top businessmen and the sons of former cabinet ministers detained on allegations of bribery, gold smuggling and illicit dealings with sanctions-hit Iran.
The premier's office said the wire tapped conversations were fabricated and vowed to take legal action against those behind "this dirty setup".
Erdogan has come under intense pressure since the corruption scandal erupted, throwing up the biggest challenge yet to his 11 years in power ahead of key local elections in March.
He has blamed his ally-turned-rival, US-based Muslim cleric Fethullah Gulen, for instigating the graft probe, accusing him of seeking to create "a parallel state" in Turkey.
An Ankara prosecutor's office has launched an investigation into the recordings, the Hurriyet newspaper reported.
The controversy also prompted fresh calls from the opposition for the government's resignation.
