A former chief superintendent of Humberside Police has been sentenced to 10 years in prison after being found guilty of raping his daughter.
Alec Alexander, 61, formerly of Woodhill Rise, Hessle was also found guilty of two counts of indecent assault on his daughter and one count of taking an indecent picture of her.
Passing sentence at Hull Crown Court, Judge David Tremberg said his actions were a “gross breach of trust”.
Alexander’s daughter waived her right to anonymity during the trial.
He was cleared of one count of attempted assault.
Alexander had previously admitted 17 offences of taking, possessing and distributing indecent images during a hearing in April.
The jury heard Alexander first sexually assaulted his daughter when she was seven years old.
The former police chief raped his daughter in 1992 when she was 17.
Alexander was a divisional commander at Humberside Police at the time and had reached the position of chief superintendent before his retirement in 2000 after 30 years of service.
In passing sentence, Mr Tremberg said: “You are an intelligent man. You were a senior police officer.
“You were no doubt thoroughly familiar with the sort of harm this type of offence could inflict.
“You had an obsession of sexually offending against girls with a particular propensity towards incest.”
Det Supt Dena Fleming, who led the investigation, said more than 65,000 indecent images were found on Alexander’s computer.
She said every image showed a baby, toddler or young child being subjected to abuse.
‘Bravery and courage’
During the course of the their inquiry, officers discovered Alexander used the internet to communicate with other paedophiles.
“My team were able to recover a contact list and chat logs of Alexander discussing his fascination for incestuous sexual activity, especially that between a father and daughter,” Det Supt Fleming said.
“He was able to do this whilst sharing obscene images of this nature with other like-minded individuals.
“His actions have had a lasting effect on his daughter who will undoubtedly live with this for the rest of her life.
“I would like to pay tribute to her for her bravery and courage at speaking out about her experiences and reporting it to police.”