Man injured in balcony fall in Sydney

A man has been seriously injured after falling from a balcony during a brawl on Sydney's eastern beaches.

Police have launched a critical incident investigation as officers were at the scene in Coogee when the man fell on Saturday evening.

Police said the man, believed to be aged in his 20s, was sitting on a balcony when he fell onto an awning then onto the footpath.

He was treated at the scene by paramedics before being taken to St Vincents Hospital in a serious condition.