A manipulative predator who molested a vulnerable, bedridden school pupil before targeting other underage girls during a catalogue of abuse has been jailed for 12 years.

A judge told James Lochrie at the High Court in Edinburgh he had been unanimously found guilty of "three extremely serious sexual offences against female children in their early teens".

Lord Pentland said the evidence at Lochrie's earlier trial showed he had a depraved sexual interest in teenage girls.

The judge said the abuse he perpetrated caused serious harm and told him: "Society abhors the sexual abuse of children."

Lord Pentland said: "You have evinced no remorse and the slightest concern for any of your victims."

A background report prepared on Lochrie (41) had categorised him as "a high and imminent risk" of further offending.

Lord Pentland also ordered that Lochrie should be kept under supervision or a further three years. He told him he would be on the sex offenders' register for the rest of his life.

Lochrie's sex crimes began in 2006 when he carried out sex acts on a 14-year-old, who was recuperating from illness, after visiting her at her home in a West Lothian town while her mother was at work.

Another victim who was sexually assaulted by Lochrie at a house in a village in West Lothian told his trial that the abuse left her feeling "used, dirty, uncomfortable".

The teenager said that Lochrie put a hand over mouth as he carried out the sex attack on her at the age of 13 in 2013.

A friend of the girl earlier told the High Court in Edinburgh that she later informed her Lochrie was "a paedophile".

Lochrie also went on to have underage sex with a girl, aged 14, in Glasgow and her mother found a message from him on her daughter's phone.

In it Lochrie said he was "gutted" because the girl had been in her bra and pants for three nights and he had missed it. He urged the child who was on a visit in England to send him a picture.

Lord Pentland earlier said that evidence at his trial demonstrated he was "a dangerous, manipulative and calculating sexual predator".

Lochrie, of Oaktree Gardens, Castlemilk, in Glasgow, had faced a string of sexual offence charges during a trial. He denied indecency towards the first victim, assault on the second and unlawful sexual intercourse with the third underage girl, but was unanimously found guilty of the offences by a jury.