Ottawa police are looking for one man they believe is responsible for two reported sexual assaults and a suspicious incident this morning in the Alta Vista neighbourhood.

One call came in for a suspicious incident at Drake Avenue and Knox Crescent at about 7:20 a.m. near The Ottawa Hospital's General campus.

The incident call came from Riverview Alternative School, which was in lockdown. Police say a man followed a daycare worker, 22, into the school from the Hurdman OC Transpo station. There was no attack, though, as the man was chased from the school.

A second call then came in 20 minutes later in the 1600 block of Dorion Avenue where police say a man approached a woman, 19, from behind and pulled her pants down.

3 incidents in 40 minutes

A third call came around 8 a.m. from the Ottawa Montessori School on Lindsay Street.

The school said that call was related to a reported sexual assault at Alta Vista Drive and Industrial Avenue where a woman, 41, also had her pants pulled down from behind.

The call to police was made from the school because it was the 41-year-old victim's workplace.

"An incident occurred involving one of our staff as she made her way to work; it did not occur at the school," read a release from the school.

The suspect is described as standing five feet six inches, Caucasian, between 20 and 25 years old, with a medium build and short black hair.

He was seen wearing a dark hooded jacket, blue jeans and a dark baseball cap.

This now brings the number of reported sexual assaults to nine in the past two weeks in Ottawa. There were already seven reports of sexual assaults downtown.

Anyone with information is asked to contact Ottawa police at 613-236-1222, ext. 5944 or Crime Stoppers at 613-233-8477.