The subpoena demands copies of "edited and unedited versions of interviews" with former Rep. Mark Walker, his opponent deputy treasurer Richard Ellis and Curtis.

Walker and Ellis allegedly negotiated about a deal by which Ellis would receive a 50 percent pay raise and keep his job if he dropped out of the treasurer's race. Ellis claimed that Walker had told him that an unnamed state legislator had assured him the money would be available.

Davis County Attorney Troy Rawlings and Weber County Attorney Mark DeCaria have been asked by the Utah attorney general's office to investigate the allegations.

Curtis has denied any involvement in the purported deal, including in a pair of interviews that aired on KSL radio on June 23 and on KSL television on July 10 that the prosecutors subpoenaed.

"Our lawyers are reviewing it, but we'll comply at some point," said Con Psarras, vice president and news director at KSL. "Much of what we recorded on camera we aired, so there's not a secret aside that I'm aware of."

- Robert Gehrke