A 22-year-old man is in hospital in unstable condition after a serious assault in Winnipeg's West Broadway area.

Police were called to the alley behind a duplex on Langside Street, between Portage Avenue and Broadway, just before 1:30 a.m. Friday.

They found the man with multiple serious injuries and he was rushed to hospital.

A 23-year-old man was arrested nearby.

Police are still trying to determine if a weapon was used "but I can tell you the injuries to our victim were extensive," said Const. Jason Michalyshen.

"Clearly he needed immediate medical attention."

Members of the police service's major crimes unit is investigating and charges are pending.