Authorities are urging three teenagers to hand themselves in after police arrested two others who were allegedly part of an armed gang which carried out a violent home invasion in Melbourne's south-west.

Detectives have arrested two men – an 18-year-old from Melton West and a 16-year-old from Glenroy – over the aggravated home invasion which occurred on Saturday morning.

Police arresting one of the alleged offenders. Credit:Victoria Police

Police believe five offenders allegedly forced entry into the the home on Peppermint Crescent in Wyndham Vale about 5.45am. An 80-year-old man, a 66-year-old woman and a 27-year-old woman were at home at the time.