Recep Tayyip Erdogan has angrily condemned as fabricated an audio recording that appears to show him talking to his son about hiding large sums of money.

The Turkish prime minister said the recording, allegedly tapped and posted on social media, was a “treacherous attack”.

It appears to reveal Recep Tayyip Erdogan asking his son Bilal to dispose of millions of euros in cash from a house.

The opposition has called for the prime minister’s resignation.

The recordings, which could not be independently verified, were said to be of four conversations dating back to December 17, when the sons of three ministers and business allies of the prime minister were detained in a high-level corruption investigation.

Correspondents say that the inquiry has presented a major challenge to Recep Tayyip Erdogan’s 11 years in power ahead of key local elections in March.

However, neither the prime minister nor his party’s spokespeople have denied that the voices on the recording belong to Recep Tayyip Erdogan and his son.

Their statement so far is that their voices were “montaged” to implicate them.

During the conversation, a voice can be heard discussing how to reduce the funds to “zero” by distributing them among several businessmen.

Recep Tayyip Erdogan has angrily condemned as fabricated an audio recording that appears to show him talking to his son about hiding large sums of money

At one point, the second voice says some 30 million euros ($40 million) remains to be disposed of.

Recep Tayyip Erdogan’s office issued a statement late on Monday night saying the release of the recordings was part of a sustained campaign to unseat him.

“Those who created this dirty conspiracy targeting the prime minister of the Republic of Turkey will be brought to account within the law,” it said.

Recep Tayyip Erdogan had a late-night meeting with the head of intelligence and then spoke out publicly on Tuesday, telling lawmakers from his AK Party the recording was a “shameless montage” and an attack on him personally.

“We will bring legal action against these [wire-tapping] activities. If we let it go on, there will be no privacy for families, nor for the state in this country,” he said.

By late Tuesday morning, the recording had received more than 1.5 million hits on YouTube in less than 24 hours.

The previous day, Turkish government officials said thousands of people, including senior politicians and other leading figures, had had their telephones illegally tapped over three years with the aim to blackmail and fabricate criminal cases.

Two pro-government newspapers, Yeni Safak and Star, alleged that the taps were ordered by prosecutors said to be loyal to US-based cleric Fethullah Gulen. The prosecutors have denied the accusations.

Recep Tayyip Erdogan has accused Fethullah Gulen, his former ally, of orchestrating December’s corruption investigation against key AKP figures and of trying to form “a parallel state” in Turkey.

One of the prosecutors named in the stories, Adem Ozcan, denied the allegations.

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