A former teacher was caught with child abuse images after giving his computer to a technician to fix a virus.

Robert Lightband, who used to be a senior history teacher at Menzieshill High School in Dundee, previously avoided a jail term in 2002 when he was found with a folder filled with child abuse images.

The 69-year-old, who advertises himself online as a semi-retired organist and organ teacher, could face prison after he was caught downloading indecent images for a second time.

Dundee Sheriff Court heard he had downloaded six indecent images and 2000 "concerning images" over a nine-month period spanning 2014 and 2015.

Lightband's lawyer told the court the 69-year-old admits he is "sexually attracted to boys" and that treatment may not help him.

Fiscal depute Eilidh Robertson said Lightband had one previous conviction - his earlier indecent images offence.

She said: "Search terms were found by the technician relating to paedophile groups. Police were called and when interviewed, Lightband fully admitted downloading the images.

"He also admitted purchasing a pornographic paedophilic novel. He said he was attracted to boys aged 12 years and up.

"Six indecent images were found as well as 2000 concerning images featuring boys in swimming costumes and shorts. His internet search history consisted of him searching for indecent images."

Lightband, of Clepington Court, Dundee, pleaded guilty on indictment to a charge of taking or making indecent photographs of children between June 16, 2014, and February 25, 2015.

John Boyle, defending, said: "He is honest enough to admit these offences are committed due to a sexual interest in young boys and that treatment is unlikely to change that. There are stringent conditions that could be imposed on him in the community."

Sheriff Alistair Carmichael jailed Lightband for 145 days, imposed a seven-year sexual offences prevention order with numerous conditions and placed Lightband on the sex offenders register for seven years.

He said: "It seems to me there would be little or no point in imposing a community payback order due to the attitude you have expressed. There is no option but a custodial sentence."

Lightband was sacked from Menzieshill High School and his civic role as Dundee's official organist after his previous offences came to light in 2002.

The photos were discovered by a cleaner who stumbled on the folder on a bedroom dresser as she worked.