Police are hunting a man who allegedly broke into a home in Prahran in the early hours of Saturday morning and sexually assaulted two women before fleeing.

Detectives from the sexual crimes squad are investigating after the mean entered the home, on Charles Street, about 4.30am.

Once inside, he allegedly assaulted two women before fleeing when other occupants of the house confronted him.

Police have not released a description of the man.

They have urged anyone with information to contact Crime Stoppers on 1800 333 000.