An Australian man who pleaded guilty to the murder of an Irish backpacker in Melbourne last year has appeared in court for a pre-sentence plea hearing.

David Greene, 30, from Dublin died in hospital last September.

He had been attacked two weeks previously at a boarding house in St Kilda East.

Luke James Wentholt, 31, has also pleaded guilty to intentionally causing serious injury to Mr Greene's friend, 28-year-old Irishman David Byas.

Family and friends of Mr Greene were in court for the sentence hearing.

Wentholt has written apologies to Mr Greene's parents but the court heard that they do not wish to read them.

Their tearful victim impact statements were delivered to the court.

His mother said that her life was now in turmoil.

His father said that he thought of his son "every minute of the day".

Mr Greene's mother said she will never forgive the man who killed her beautiful son and hopes justice will be done.

The Supreme Court of Victoria heard that Wentholt had a long criminal history, including jail time for violence.

The court heard that Wentholt went to Victoria from Queensland to make a new start, but within a year had killed Mr Greene in a drunken rage.

The prosecution wants Wentholt jailed for a maximum 21 years, or minimum 15 years, for the murder and for injuring Mr Byas.

The sentence will be handed down in late August or early September.