Here is what the Edmonton Police Service is saying about the stabbing of an officer Saturday night and a vehicle that struck four pedestrians.

The force says both incidents are related and being investigated as acts of terrorism:

■ At about 8:15 p.m. MT an Edmonton police officer was working traffic control during an Edmonton Eskimos football game. He was behind a traffic barrier and near a police cruiser with flashing lights close to Commonwealth Stadium.

■ Suddenly a man driving a white Chevy Malibu at a high rate of speed crashed through the barricade and struck the officer, sending him flying into the air.

■ A man jumped out of his vehicle and attacked the officer with a knife. As they struggled, the man stabbed the officer several times before running away.

■ Police found an ISIS flag in the car.

■ Just before midnight a U-Haul truck was pulled over at a police stop on the city’s east side.

■ Police asked to see the driver’s licence and recognized the name as being similar to the registered owner of the Chevy Malibu.

■ The U-Haul truck then fled the scene and was pursued by police toward the downtown area.

■ During the chase, police say the truck deliberately tried to hit pedestrians in crosswalks and alleys.

■ Four people were hurt and taken to hospital.

■ The chase ended when the U-Haul truck flipped near Jasper Avenue and the 30-year-old driver was arrested.

■ Police are investigating the incidents as acts of terrorism.

■ Edmonton Police are working with RCMP and other security agencies and believe the man acted alone.

■ The police officer’s injuries are not critical. The medical condition of the four pedestrians was not released.