A Mayo prisoner, described as someone who poses a "serious risk" to the public, has been resentenced for killing his mother ten years ago.

In 2014, Celyn Eadon, was handed a life sentence for murdering Noreen Kelly at their home at Islandeady in Castlebar, but his conviction was overturned on appeal.

In the lead up to the "frenzied knife attack" on his mother in March 2011, Celyn Eadon was spending hundreds of euro every week on drugs.

He was found guilty of murder and handed the mandatory life sentence, but his conviction was overturned on appeal.

A retrial wasn't needed in the end, because his plea to the lesser charge of manslaughter was accepted last year.

In resentencing him, the judge at the Central Criminal Court accepted he wasn't suffering from a mental illness at the time, but said he now had to consider the brain damage caused by years of drug abuse.

During his time in prison, Eadon has been convicted for eight attacks on prison staff - something Mr Justice Michael White also had to give careful consideration to.

He described his violent tendencies as "alarming" and said he had to be conscious of the very serious risk to the public upon his release.

The judge resentenced him to sixteen years in prison with the final two years suspended, but he said high priority must be given to a structured release involving several agencies to ensure public safety.