An Italian mother has been jailed for 30 years after she murdered her son when he found her having an affair with his grandfather.

Veronica Panarello strangled eight-year-old Loris Stival with electrical cables and abandoned his body in a remote gully in Santa Croce, Sicily.

He was found dead on November 29, 2014, Yahoo Italy reports.

She told police he had been abducted, claiming she had taken him to school and that he had vanished by the time she went to collect him.

CCTV footage from the school proved Panarello had not dropped him off that day and police treated her as a suspect.

She was found guilty of her son’s murder and concealing a body.

Despite this Panarello continued to deny the murder, even post sentencing.

The prosecution labeled her an ‘egocentric, manipulative liar.’

View photos Loris, 8, was found dead in November 2014. Photo: Yahoo Italy More

During her initial confession that her son had been killed in November 2014, Panarello blamed her husband’s father Andrea Stival.

She claimed Stival helped to plot and then carried out the murder because Loris had caught them having sex.

Stival is being investigated as an accessory to murder, Italian media claims.

He denies the allegations and has threatened to sue his daughter-in-law for 400,000 euro slander.

View photos Panarello's husband David has filed for divorce and asked for compensation. Photo: Yahoo Italy. More

Panarello’s husband David has reportedly filed for divorce.

He has asked for compensation of two million euro for him and another two million for the baby's grandmother, Pinuccia April.