JACKSONVILLE, Fla. -

Documents obtained by Channel 4 reveal new details about a previous guilty plea by a Jacksonville man accused of hacking into celebrities' email accounts and stealing personal information.

Christopher Chaney admitted he and a friend stole money from Prudential in 1998, according to a plea agreement. Chaney pleaded guilty to mail fraud.

Chaney filled out blank checks in the amount of $3,800 and $2,100 that were provided by Michael Hall, a Prudential employee.

Chaney was sentenced to four years of probation and restitution.

Hall was sentenced to four months in prison and three years of probation.

Last week, Chaney was charged with 26 counts of computer hacking, aggravated identify theft and wire tapping.

Investigators say he hacked into the email accounts of Scarlett Johansson, Christina Aguilera and Mila Kunis. He has a hearing scheduled in federal court in Los Angeles scheduled next month.