07/11/2005 AT 09:00 AM EDT
A tentative plea agreement has been reached in the case of a man charged with plotting to kidnap the young son of David Letterman, a Montana prosecutor tells the Associated Press.
Teton County Attorney Joe Coble says that Kelly Frank, who earlier pleaded not guilty in the case, will appear Monday in state court in Conrad for a change-of-plea hearing. Coble added that the agreement was reached Friday through Frank's attorney, Jim Hunt, though no details of the proposed deal have been released.
"We have a verbal agreement," Coble said. "We have presented a written agreement to the defendant, and he has it over the weekend to consider before he signs it."
Tom Keaney, spokesman for Letterman's production company, had not heard about the plea agreement and said no one was available to comment.
Frank, who worked on Letterman's sprawling ranch near Choteau in northwestern Montana, was arrested in March after an acquaintance told authorities that Frank allegedly had talked of a plan to kidnap Letterman's then 16-month-old son, Harry Joseph, and the boy's nanny and hold them for $5 million ransom.
Frank earlier pleaded not guilty to felony solicitation and theft and a misdemeanor charge of obstruction. He's remained in jail since his arrest.