"We're trying to find the evidence, but there's no absolute evidence to show that," Ellen Tian, Director of Drainage Operations said.

On Friday, officials said the source of the spill was still under investigation the City of Edmonton said they were still trying to work out if the fuel came from the City's sewer system.

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It's believed the substance somehow ended up in the city's drainage system, and seeped into the river from a culvert near the Quesnell Bridge, the spill stretched about two kilometres downstream.

"This was, by all accounts, a fairly short release," Jamie Hanlon with Alberta Environment said. "There was no sheen as of this morning and at this point we're not identifying that there's any ongoing impact to the river at this point."

´╗┐Alberta Environment investigating fuel spill in North Saskatchewan River

On Thursday evening, a bystander noticed an oily sheen on the surface of the river near the Buena Vista dog park, and fire crews were called in to try and pinpoint the source.

Alberta Environment said it appeared that very little fuel was Women Canada Goose Thompson Jacket Berry Outlet Nz released.

Officials with Alberta Environment said an investigation was underway, after an oily substance was seen on the surface of the North Saskatchewan River Thursday evening.