2017 Edmonton attack

On the evening of September 30, 2017, during a military appreciation night football game at Commonwealth Stadium in Edmonton, Alberta, a driver deliberately rammed Edmonton police constable Mike Chernyk, who was standing near a barricade close to his patrol car at around 8:15 p.m. The driver then exited his vehicle and stabbed Chernyk before fleeing the scene on foot.

Around midnight, a U-Haul rental truck was stopped at a police checkpoint on Wayne Gretzky Drive and 112 Avenue during the ensuing manhunt. When officers identified the driver as Chernyk's attacker, he fled again, this time by driving off with roughly a dozen police vehicles in pursuit. During the chase, the driver struck four pedestrians with the truck — two in an alleyway near 109 Street and Jasper Avenue, and two others near 107 Street and Jasper Avenue. Police eventually used a PIT maneuver to stop the truck at the intersection of 107 Street and 100 Avenue, where the driver was arrested. Police investigated the incident as a possible act of terrorism, citing the presence of an Islamic State of Iraq and the Levant flag found in the van used in the initial ramming of the officer.

Constable Chernyk suffered stab wounds to his face and hands. He was released from hospital the following day and returned to work 18 days later. The four pedestrians struck by the truck suffered injuries ranging from broken arms to brain bleeds; two were released from hospital after treatment the following day, while the other two remained hospitalized longer, with one upgraded from critical to stable condition and another, who suffered a fractured skull, later regaining consciousness. All five victims survived.

The perpetrator, 30-year-old Abdulahi Hasan Sharif, a Somali national and refugee, had previously been detained by U.S. immigration authorities in 2011 pending deportation before being released and later losing contact with authorities. He subsequently claimed refugee status in Canada. In 2015, following a report from a colleague about expressed extremist views, the RCMP and Edmonton police investigated Sharif for extremism and determined he was "not a threat." Sharif was arrested following the attack on charges including five counts of attempted murder, dangerous driving, criminal flight causing bodily harm, and possession of a weapon for a dangerous purpose; however, the Crown ultimately did not lay terrorism-related charges.

In 2019, Sharif stood trial on eleven criminal charges: five counts of attempted murder, four counts of criminal flight from police causing bodily harm, one count of aggravated assault, and one count of dangerous driving. He pleaded not guilty, did not retain legal counsel, did not testify, and called no witnesses. He was convicted on all eleven charges. On December 13, 2019, he was sentenced to 28 years' imprisonment, with 3.3 years of pre-sentence credit applied, leaving 24.7 years to serve.

The attack drew condemnation from Edmonton mayor Don Iveson, Alberta premier Rachel Notley, Canadian Prime Minister Justin Trudeau, Calgary mayor Naheed Nenshi, and the National Council of Canadian Muslims, as well as international statements from the White House and U.S. Vice President Mike Pence.