Adelaide one-punch murder charge to be downgraded to manslaughter

A murder charge against an Adelaide man accused of killing another with a single punch in Rundle Street last year will be downgraded to manslaughter.

The accused man is in his 20s and cannot be identified due to a suppression order.

He was due to answer a murder charge during a hearing in the Adelaide Magistrates Court but the prosecution said it planned to downgrade the charge to manslaughter.

Forty-four-year-old Roberto Vallelonga died of head injuries after he was punched and fell to the ground on Rundle Street in May last year.

The court heard last year that both men had earlier been at Apple Nightclub where Mr Vallelonga was ejected for disorderly behaviour.

The case was adjourned until February.