Ottawa police have arrested a suspect in connection with the stabbing of a teenaged girl that happened Tuesday evening steps away from the Rideau Canal.

An 18-year-old woman was arrested Friday and charged with four offences, according to police:

Aggravated assault.

Assault with a weapon.

Possession of a dangerous weapon.

Uttering death threats.

The accused and victim were known to each other, according to a news release.

Police say the suspect appeared in court on Saturday and remains in custody.

Girl stabbed in stomach

Emergency crews were called to the scene just south of where Colonel By Drive passes under Laurier Avenue around 6 p.m. Tuesday.

Police said the calls came in after people saw a teenaged girl on the side of the road asking for help.

"She was on the roadside just up here on the east side of Colonel By Drive right along the roadway and had indicated that she was injured and was in need of assistance," Insp. Glenn Wasson told CBC News on Tuesday.

Insp. Glenn Wasson with the Ottawa Police Service says bystanders applied pressure to the girl's wound until help arrived. 0:37

Wasson said bystanders helped by putting pressure on her wound until emergency crews arrived at the scene.

Initially, paramedics said the girl was stabbed in the stomach and had been rushed to hospital in life-threatening condition.

Wasson said the girl was being treated in hospital and her injuries, while serious, were no longer considered life-threatening.

In the hours after the call, police closed Colonel By Drive between Daly Avenue and Main Street.

A section of the road was surrounded by police tape, from near the Rideau Canal multiuse path to the west and around a wooded area on the east side of Colonel By Drive where another path connects to the intersection of Nicholas Street and Laurier Avenue.

Police said Tuesday they were not yet certain when the girl came to the roadside or at what point she was injured.

"We haven't quite pinpointed exactly where her injuries were sustained, so that's what we're trying to figure out right now before we collapse the scene," Wasson said.

Investigators interviewed two people within the closed-off area, but are also asking the public to come forward if they saw anything before the 911 calls were made.