A strange material glazed the surface of a northeast Calgary road on Tuesday, leaving crews baffled at what it might be.
Firefighters, police and Calgary roads were called to the scene.
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Police closed westbound lanes until the mess was cleaned up.
“The fire crew initially thought it was some sort of human or animal waste,” said Carol Henke, a CFD public information officer.
The fire department said a construction company came back to the scene and took responsibility, saying the spill was pond scum.
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