The father of a Carleton University student who's been missing since March 9 says he's open to the possibility his daughter might have harmed herself or run away.

Mohamad Kajouji says his daughter Nadia was likely in distress at the time of her disappearance.

Kajouji says he learned this in a meeting with Ottawa Police Chief Vern White and the lead investigator working on his daughter's case.

"I honestly believe either she run away somewhere to the other side of Ottawa or she's buried here somewhere under the snow and until this snow melts that's the only way we can find answer," Kajouji told CTV News.

The 18-year-old's family has said she was depressed and not acting herself in the days leading up to her disappearance. Although her family says they knew something was wrong, Kajouji says he had no idea how deeply distressed his daughter was.

"I found out that my daughter was going under lots of stress - personal life, her life in university," he said. "My daughter fainted couple times, they have to call an ambulance to take her to the hospital."

Kajouji says his daughter had tried to harm herself before and was getting counselling and taking medication.

"I spoke to my own physician yesterday in Toronto and he assured me that the medication my daughter was taking, he told me that medication definitely need to be taken under supervision and there's a warning over there, it could be suicidal," he told CTV News.

Kajouji says he has faith in police and continues to hold onto a fading hope his daughter is still alive.

Nadia went missing from her dorm room in Ottawa after spending her university reading week with family in Brampton, Ont.

Police have searched the water and brush surrounding Carleton University in the weeks following her disappearance.

A group of about 100 students is planning a search for Kajouji along the city's O-train tracks between Carleton University and Dow's Lake at midnight Thursday.

Kajouji is described as having dark skin and shoulder-length brown hair with blonde streaks. She is 5'8 and 130 pounds. Her eyebrow and tongue are pierced.

Anyone who has any information on Kajouji's whereabouts is asked to contact Ottawa police at 613-236-1222, ext. 3726.

With a report from CTV's Aliya Jiwan