A police constable who killed himself in May was a violent rapist who carried out a spate of sexual attacks and attempted murders of women over at least 14 years.

PC Alan Greer's first known victim was a woman he raped in her home in Glasgow in 2012 after she had called the police to report being the victim of a crime.

The woman reported the sex attack by Greer late last year.

Detectives have so far uncovered a further eight victims, five of whom were sex workers, attacked while Greer was off duty.