Since May last year, Mr. Gargan has been on suspension after claims surfaced of inappropriate advances made upon female colleagues.
Police and Crime Commissioner Sue Mountstevens speaks to reporters at a news conference
The Police Chief has been found guilty of eight charges at a level of gross misconduct.
Police and Crime Commissioner Sue Mountstevens told reporters at a news conference that Mr. Gargan "abused his position by forwarding confidential emails, interfering with a proper recruitment process and sending, receiving and storing intimate images on his police issue phone."
She continues: "I believe that there is now a detrimental impact on the efficiency and effectiveness of him leading Avon and Somerset Constabulary, which is why I have today initiated the process to require him to resign."
Press Conference over Disgraced Police Chief Misconduct