FOUR men from south Buckinghamshire have been found guilty of sexually abusing a vulnerable schoolgirl over an eight month period.

Nazakat Mahmood, Ghulfaraz Nawaz, Haroon Rauf and Omar Sharif were convicted of committing a string of sexual offences against the girl between December 2011 and July 2012.

She was just 14 years old at the time of the abuse.

Mahmood, Nawaz and Rauf forced the girl, who was often plied with alcohol, to perform sex acts on them and pressured her into having full sex on several occasions in the Chesham area, Reading Crown Court heard.

After the trio were arrested, Sharif blackmailed her into having sex with him - including in her pyjamas in a graveyard in the middle of the night, jurors were told.

Prosecutors said all of the men had denied having any sexual activity with the girl or inciting it, and they believed she was at least 17 years old.

Yet jurors were told all of the men, then aged in their 20s, had known how young their victim really was.

On Tuesday, jurors returned guilty verdicts on 20 counts against the four men to bring an end to the three week trial.

Investigating officer Det Con Natalie Golding said: "This was abuse of a young vulnerable girl in the most horrific way.

"All four men used this girl and then, when she had the courage to come to police, they denied the offences and continued to deny them.

"I want to thank the victim here for her bravery in coming forward and helping us to put these men behind bars.

"Hopefully this will go some way to showing other victims of sexual offences that we will listen to you and we will take you seriously."

All four men have been remanded in custody ahead of sentencing on May 16.

The charges are as follows:

Nazakat Mahmood, 28, of Batchelors Way, Chesham - convicted of seven counts of sexual activity with a child and two counts of causing or inciting a child to engage in sexual activity.

Ghulfaraz Nawaz, 27, of Benham Close, Chesham - convicted of two counts of sexual activity with a child.

Haroon Rauf, 30, of Drakes Close, Amersham - convicted of two counts of sexual activity with a child, one count of assault by beating.

Omar Sharif, 25, of Brockhurst Road, Chesham - convicted of six counts of sexual activity with a child.