A massive Italianate-style mansion costing an alleged US$1 billion and dubbed "Putin's Palace" is under construction near the Black Sea village of Praskoveevka. In 2012, Sergei Kolesnikov, a former business associate of Putin's, told the BBC's "Newsnight" programme that he had been ordered by Deputy Prime Minister Igor Sechin to oversee the building of the palace. He also said that the mansion, built on government land and sporting 3 helipads, a private road paid for from state funds and guarded by officials wearing uniforms of the official Kremlin guard service, have been built for Putin's private use. Putin's spokesman Dmitry Peskov dismissed Kolesnikov's allegations against Putin as untrue, saying that "Putin has never had any relationship to this palace." On 19 January 2021, two days after Alexei Navalny was detained by Russian authorities upon his return to Russia, a video investigation by him and the Anti-Corruption Foundation (FBK) was published accusing President Vladimir Putin of using fraudulently obtained funds to build the estate for himself in what he called "the world's biggest bribe." In the investigation, Navalny said that the estate is 39 times the size of Monaco and cost over 100 billion rubles ($1.35 billion) to construct. It also showed aerial footage of the estate via a drone and a detailed floorplan of the palace that Navalny said was given by a contractor, which he compared to photographs from inside the palace that were leaked onto the Internet in 2011. He also detailed an elaborate corruption scheme allegedly involving Putin's inner circle that allowed Putin to hide billions of dollars to build the estate.