Three young women sexually assaulted on St Patrick's Day in Otago Uni precinct

Three women have been left extremely traumatised by sexual assaults in Dunedin, say police who are appealing for help to solve the crimes.

The attacks happened in the student district on Friday night, the first happened at a Dundas Street house between 8pm and 8.30pm.

Two 19-year-old women were in the same room when a young man walked in and sexually assaulted them both, police say. 

They say a large number of people celebrating St Patrick's Day had congregated at a house nearby, known as "The Hospital".

The offender may have been in this area around the time of the attack and police want to hear from anyone who may be able to help identify him.

He's described as being in his twenties, with short, dark hair and dark skin and he was wearing shorts and a t-shirt.

Officers are also investigating a separate incident that happened on Leith Way at about 9.15 to 9.30pm.

A woman was walking north, towards UniCol, when she was pushed over and sexually assaulted by a Caucasian man in his early twenties. 

He is described as being of medium build, 180cm tall, with long, dark, curly hair that was tied back.  

"We are keeping an open mind in respect of whether these two attacks are connected," said Detective Senior Sergeant Kallum Croudis. 

"A team of 10 staff is investigating these incidents, scene examinations are complete and the large job of scrutinising CCTV footage is underway," he said.

"All three victims are extremely traumatised by what's happened and are receiving strong support."

Otago University
Otago University Source: 1 NEWS