A scout assistant in jail for rape faces having extra time added to his sentence after abusing two boys from the group he helped.

Joseph Prunty, 59, sexually abused two schoolboys at a number of places, including scout trips to Barra and Auchengillen campsite, Blanefield, and other places in Glasgow.

He got one boy – who was abused for 18 months from the age of 14 – to pretend to a female friend that he was over 16 and made him “participate in sexual activity” in the back of his car with them.

The dad-of-four was jailed for eight years in April 2014 after being convicted of a string of sex offences, including raping a 12-year-old.

Yesterday at Glasgow Sheriff Court Prunty, from Cardonald, pled guilty to using lewd and libidinous practices and behaviour towards a 12-year-old boy between August 1996 and 1998.

He also admitted indecently assaulting a 14-year-old boy between June 2000 and December 2002. The court heard the offences came to light in the course of a police investigation.

Procurator fiscal depute John Bedford said: “The accused was in a position of trust as an adult helper with the scout group and sexually abused two male scouts at various places during scouting trips to the Island of Barra and Auchengillen Scout Campsite, Blanefield.”

He said the incidents also took place at a church hall in Glasgow, the Cathkin Braes and Pollokshields area.

The court was told the first victim, who was only 12 when the abuse began, knew Prunty was a helper with the scouts.

The High Court in Edinburgh heard how Prunty carried out the attacks while he was living with his wife and having an affair with another woman.

Prunty was also ordered to be supervised for four years after his release from prison.