The husband of an Indian post-graduate student missing in Tasmania since Friday has made an emotional plea for her safe return.
Natasha Narang was last seen on CCTV footage at the University of Tasmania in Launceston.
Police say there has been no sign of the 30-year-old education student since.
Her husband, Sandeep Narang, last saw his wife when he dropped her at the campus on Friday afternoon.
"Every second is killing me, I have sleepless nights, I am trying to search everywhere ... we don't have any close friends here, so I am stressed," Mr Narang told Launceston newspaper The Examiner.
Inspector Michael Johnson said Ms Narang had not made preparations for any kind of overnight stay, but police had no reason to suspect foul play.
He said threats to foreign students in other states had not been an issue in Tasmania.
"There's no evidence to suggest that that's an issue in this particular matter," he told AAP.
"We've got no reason or information to suspect or point to foul play."
Mr Narang has said study stress in a Sikh community that values high achievement could have caused his wife to run away.
Inspector Johnson said police were treating that as a possible explanation.
"There is some suggestion that her studies weren't going as well as they could have been," he said.
"That was potentially an issue."
The couple have been in Tasmania for several years, with Ms Narang completing much of her study at UTAS.
Natasha Narang is described as about 165cm tall, of medium build, with long black hair and olive skin and last seen wearing a long-sleeved black top, grey coloured jeans and black shoes.
Anyone with information relating to her whereabouts should call Crime Stoppers on 1800 333 000 or Launceston police on 03 6336 3945.
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