The son of US House Speaker Nancy Pelosi was allegedly involved in a fraud and bribery scheme that was investigated by the FBI, according to documents obtained by the Daily Mail.

 The documents indicate Paul Pelosi, 53, was the homeowner of the flophouse at the center of the fraud and bribery investigation.

Paul Pelosi Jr. signed statements that he was the property owner and 'the party legally and financially responsible for this proposed construction activity' at the property known as 'The Pit'.

Documents show he was applying for one of the same permits that building inspector Bernie Curran and 'permits expeditor' Rodrigo Santos have been indicted for in a high-profile public corruption criminal case .Curran and Santos are due in federal court in San Francisco this week according to the FBI.

The Department of Building Inspection form signed by Pelosi Jr from 2017 provides some evidence of his close connection in the case.

The FBI says that Santos arranged for his clients to donate thousands of dollars to Curran's favorite non-profit in exchange for him ignoring violations that would prevent their buildings from getting city permits.

One client, identified only as Client 9 in court documents, wrote a $1,500 check to the nonprofit to help remove violations from a hotel that was owned by Pelosi Jr's former girlfriend, Karena Apple Feng.

New documents as well as text messages have created speculation that Client 9 may be Pelosi Jr.

The text messages between the two show Client 9 discussing the donation to Curran's favorite charity to ease the permit process.

'I will forward the address to Curran. He will abate it,' Santos allegedly wrote in September 2017.

'Please drop off a check payable to Golden Gate Youth [Rugby] Association for $1k. Bernie's nonprofit.'

With pleasure,' Client 9 replied, and later sent Santos a picture of a $1,500 check with the message, 'Made the donation and it is being sent today'.