Teen stabbed to death in Sydney

Three people have been charged with murder after a teenage boy was found stabbed to death in southwest Sydney.

Police were called to Marco Avenue in Panania on Monday at about 6pm, where they found the 18-year-old alive but badly wounded.

The teenager was rushed to Liverpool Hospital but died from his injuries.

This morning homicide police charged a 17-year-old boy and two men, aged 18 and 20, with the murder.

Local resident Karen Digby said at least 15 youths were involved in a street brawl yesterday evening.

A brawl broke out more or less, it was escalating, I called the police. They were here in about 10-minutes but they had all dispersed by then," she said.

The 17-year-old has been refused bail and will appear in Parramatta Children's Court today.

The two men will appear in Bankstown Local Court today.

With AAP