PORTLAND, Ore. (AP) -- Multnomah County Sheriff Bob Skipper has disconnected the Internet from most of the county jails while his office investigates allegations that deputies used a work computer to view pornography.

Under a policy to start Dec. 1, jail employees will no longer be able to surf the Web from work computers unless they submit a written request.

Computers in most monitoring stations and cell blocks will be disconnected.

Employees who use the Internet as a work tool -- such as jail deputies who need to communicate with detectives and other agencies -- will continue to have access to the Internet.

The links to the porn sites were discovered on a computer hard drive that showed three jail deputies had each used it separately.