The most recent Solyndra updates are here.

Two top Solyndra executives will invoke their Fifth Amendment rights during a scheduled testimony before the House of Representatives, Reuters reports.

In the letters sent to the House Energy and Commerce Committee’s Subcommittee on Oversight and Investigations, attorneys for Solyndra CEO Brian Harrison and CFO W. G. Stover said they advised their clients not to provide testimony during the hearings.

The bankrupt company’s $535 million federal loan guarantee is being investigated by the House Energy and Commerce Committee.

Harrison is represented by Orrick, Herrington & Sutcliffe and Stover is represented by Keker & Van Nest.

Solyndra’s offices were raided by the FBI two days after the company filed for bankruptcy, although the FBI did not say what prompted the raid.

One wonders what they have to hide.

Solyndra, of course, was the solar company that mysteriously received a low-interest, $535 million taxpayer-backed loan from the Obama Administration. The politically-connected company received the loan despite many warnings — both internal and external — that the company’s business model was destined to fail. The administration expedited the loan regardless.

One of Solyndra’s top investors was an Obama donor and billionaire named George Kaiser, who met with administration officials shortly before the loan was approved. The administration not only approved the loan but allowed Kaiser to recoup his personal losses (should the company fail, which it did) before taxpayers could recover their own.

Federal investigators, prompted by inspectors general, are now looking into the deal. The FBI has already raided both the Solyndra facility and homes of the company’s top executives. Reports indicate the raids were in connection with an ongoing fraud investigation into the company.