Dmitry Peskov declared income of 37.6 million roubles( 388,000) for 2015, while the Russian president declared 8.9 million

Vladimir Putins spokesman, Dmitry Peskov, earned four times more income last year than his boss, according to declarations released by the Kremlin.

Peskov said on Monday that the difference was because he had received an inheritance pay after his father succumbed. He declared an income of 37.6 m roubles( 388,000) in 2015, up from 9.2 m roubles in 2014. The Russian presidents declared income for 2015 was 8.9 m roubles.

Peskov told journalists on Monday that the money was salary, and sadly I got an inheritance when my dad died.

He also owns three apartments and a Toyota Land Cruiser, according to the declaration, while Putin declared ownership of three Russian-made automobiles, a trailer, a plot of land and a small apartment.

Critics have said the income declarations, which are obligatory for all high-ranking officials, are meaningless given the numerous ways that exist for getting around them.

Revelations from the Panama Papers, published in the Guardian, connected Sergei Roldugin, a cellist and old friend of Putin, to a number of offshore companies with cash flow of up to$ 2bn( 1.4 bn ). Many of Putins other friends from the 1970 s and 1980 s have gone on to become billionaires.

The Russian president has said the revelations in the Panama Papers were true but did not implicate him. He insists Roldugin expended all of the money in his accounts on rare musical instruments.

Peskov, who has dismissed the allegations in the Panama Papers as Putinophobia, is also implicated in the document leak, via his wife, the former Olympic ice skater Tatyana Navka.

Peskov has said his wife does not and has never owned any offshore companies despite documents in the Panama leak that appear to show the contrary.

Peskov previously caused controversy when he was spotted wearing a watch worth hundreds of thousands of pounds. He said it was a gift from Navka, who declared income of 89m roubles for last year.

All officers must provide declarations for themselves and their spouses, but investigations by Russian anti-corruption campaigners have uncovered palatial dwellings and foreign properties belonging to a number of high-ranking officers.

Many are believed to use offshore companies or more remote relatives to conceal their true assets.

Read more: