A police officer is injured and a second person is in critical condition after an altercation at Calgary's Marlborough Mall Saturday afternoon. Kayla Perrin said she saw an altercation outside the mall between four people – three men and a woman. One man pulled out a large knife, she said. Perrin says she didn't know exactly what happened once the man ran into the shopping mall. Jewel Hermandez said she saw paramedics taking someone out of the mall on a stretcher.

Source: CBC News September 17, 2016 22:04 UTC