Eleven people have been assaulted with a pole and beer bottles after up to 20 men broke into a Melbourne home.

Police say two men were walking along a St Albans street on Friday night when they were approached by a group of men who assaulted them and stole a case of beer.

The pair ran into a nearby home and locked themselves inside.

Police say a short time later between 15 and 20 men broke into the home and assaulted 11 people with a pole and beer bottles before stealing money and mobile phones.

Four residents of the home required hospital treatment for their injuries but have since been released.

Investigators have been told the offenders are believed to be of African appearance and want to speak to anyone with information about the incident.

AAP