Morgan was arrested over the alleged indecent assault of a 15-year-old girl. On 17 April 2003 Morgan was again arrested, this time on charges related to child pornography.
The court had heard 59 deleted images of boys were found on his home computer, but a computer forensic expert, who appeared for the prosecution, said it was "unlikely" the former mayor had downloaded the images himself. Throughout the case, Mr Morgan claimed he had been framed.
The jury at Kingston upon Hull Crown Court found him not guilty of all charges in September 2004.