Turkish Prime Minister Recep Tayyip Erdogan slammed as vile attack by rivals recordings of him and his son allegedly discussing how to hide large sums of money as he vowed action over the issue.

Turkish Prime Minister Recep Tayyip Erdogan slammed as vile attack by rivals recordings of him and his son allegedly discussing how to hide large sums of money as he vowed action over the issue.

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 lawmakers in parliament.

The premier's office said the wiretapped conversations were fabricated and vowed to take legal action against those behind "this dirty setup".

"The recordings... are the product of an immoral montage and completely untrue," Erdogan's office said in a statement late on Monday after the material was leaked online.

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".

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.

The leaked recordings appear to be the latest fallout from their feud, after the Turkish government on Monday said thousands of influential people, including the premier, cabinet ministers and journalists, had been wiretapped by Gulen supporters in the police and the judiciary.