(AP) Two top executives at a bankrupt California solar energy company say they will invoke their Fifth Amendment rights and refuse to answer questions when they appear at a House hearing on Friday.

Solyndra Inc. Chief Executive Officer Brian Harrison and Chief Financial Officer W.G. Stover sent letters to the House Energy and Commerce Committee on Tuesday informing them of their plans to remain silent. The Associated Press obtained copies of the letters, which cite an ongoing criminal investigation by the FBI.

Harrison and Stover said they still plan to appear before the committee, which is investigating a $528 million loan Solyndra received from the Energy Department in 2009. The company since has laid off its 1,100 workers.

The L.A. Times blog has more.

The executives were first supposed to appear at a hearing on September 14. The executives agreed to appear the week of September 19th instead.

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