A Lindon man indicted earlier this year on federal fraud charges connected to his investment programs is now also accused of trying to get a jail inmate to arrange the murder of four witnesses scheduled to testify at his trial.

Jeffrey Lane Mowen, 47, was indicted Wednesday with solicitation to commit a crime of violence, tampering with a witness and retaliating against a witness, according to a press statement released by U.S. Attorney Brett Tolman.

The indictment alleges Mowen tried to get a fellow Davis County jail inmate "to engage in conduct pertaining to the attempted murder" of the witnesses to keep them from testifying at his federal trial.

A federal indictment, issued in February and unsealed in April, charged Mowen with three counts of wire fraud. His investors allegedly lost about $10 million.

Prosecutors say Mowen was promising returns as high as 33 percent a month to investors in his foreign currency trading and real-estate programs. He allegedly ran a Ponzi scheme -- in which investors are paid returns with money from more recent investors -- and used some of the money to buy automobiles and for personal expenses, including dining and traveling.

The Securities and Exchange Commission has also filed a civil lawsuit accusing Mowen of misappropriating more than $8 million in investor money to buy luxury cars and to support his lifestyle.

Mowen is awaiting trial on the wire fraud charges, which carry a maximum penalty of 20 years in prison and a $250,000 fine.