The trial has begun of a 22-year-old Co Mayo man charged with murdering his mother.

Celyn Eadon has admitted killing Noreen Kelly at their home at Derrycrieve in Islandeady on 9 March 2011, but has denied her murder.

The court heard that Ms Kelly, who was 46, lived with her two sons, Celyn and Ferdia.

This afternoon, Celyn Eadon appeared in the Central Criminal Court charged with her murder.

He pleaded not guilty to her murder, but guilty to her manslaughter.

A jury of seven men and five women heard opening statements this afternoon.

The prosecution said the jury would hear evidence that would suggest that Ceyln Eadon had been using drugs at the time of the death.

It said it is alleged that the defendant's brother went to bed at 10.20pm and woke to the sound of muffled screaming.

It said the jury would hear that he found his mother in the living room with her face covered in blood.

Prosecutors also told the jury they will hear that the cause of death was multiple stab wounds and it would be their case that after he was arrested the accused had tested positive for a number of drugs, including amphetamines and methamphetamines. 

The defence did not disagree that the accused had killed his mother and that he was lawfully arrested and detained.

However, the defence said that he denies murder.