Turkish PM Recep Tayyip Erdogan |
It appears to reveal Mr 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 17 December, when the sons of three ministers and business
allies of the prime minister were detained in a high-level corruption
investigation.
Cagil Kasapoglu from BBC Turkish says that, interestingly, neither the prime minister nor his party's spokespeople have denied that the voices on the recording belong to Erdogan and his son.
Their statement so far is that their voices were "montaged" to implicate them, our correspondent says.
During the conversation, a voice can be heard discussing how to reduce the funds to "zero" by distributing them among several businessmen.
At one point, the second voice says some 30 million euros ($40m/£24m) remains to be disposed of.
Read more: BBC News - Turkey PM Erdogan says 'tapped' phone call to son 'fabricated'