http://au.news.yahoo.com/a/-/lat ... y-assaulted-police/All four occupants of a Sydney unit were forced to strip naked and sexually assaulted by a knife-wielding pervert, before two teenagers fell from the balcony, one to her death, police say.
Investigators have seized CCTV footage of the intruder, a man aged in his mid-20s who forced his way into the Waterloo unit, and plan to release his image later Wednesday.
Chinese student (Elva) Liao Wei, 18, died after falling from her third-floor unit about 1.40pm (AEDT) on Sunday.
Her boyfriend Tae Wook "Chris" Han, 19, suffered two broken legs, a fractured pelvis and fractured vertebrae in the fall and remains in hospital facing possible permanent damage.
The two were found naked after landing on concrete below their unit.
Detective Superintendent Geoff Beresford said police had interviewed Mr Han in hospital and his information had been "very helpful".
He said all four occupants of the unit - three women and a man - had been sexually assaulted.
"We can confirm that there were a number of sexual assaults on all of the victims," he told reporters.
"In relation to the deceased person and obviously the male person who suffered injuries from falling, we do expect that they were forced either by force or by other means (off the balcony)."
He described the crime as "particularly horrendous" and shocking.
"The fear that those people must have felt during this attack would be indescribable."
The intruder is described as about 175cm tall with a strong, stocky build, dark complexion, short dark hair and was last seen wearing shorts, a T-shirt and running shoes.