A US naval officer suffered serious injuries after plunging off a balcony . Guests at a Perth Hotel heard a disturbance between a man and a woman . Police say the duo were involved in an altercation at about 1am on Monday . It 's understood the pair were both heavily intoxicated at the time . The incident is being treated as suspicious by police, who are investigating whether alcohol was a factor.
A US naval officer suffered serious injuries after plunging off a balcony . Guests at a Perth Hotel heard a disturbance between a man and a woman . Police say the duo were involved in an altercation at about 1am on Monday . It 's understood the pair were both heavily intoxicated at the time . The man broke his legs and sustained internal injuries , reports say . The 22-year-old was taken to hospital with non-life threatening injuries . Details of the incident have been handed to the US Navy for investigation .