VANCOUVER -- A man is in hospital in what police say was an unprovoked attack at an outdoor high school basketball court in Vancouver this weekend.

Police spokesman Constable Brian Montague says the stabbing occurred Saturday evening when a group of young adults were playing a pick-up basketball game at Templeton Secondary School.

He says the stabbing appears to be unprovoked and investigators are trying to determine a possible motive.

Montague says a 23-year-old man was stabbed in the back and arm by a 24-year-old American man who was not part of the game.

The suspect fled the scene and Montague says a police dog was used to track him down.

He says the suspect is still in custody and several charges are expected to be laid.

The victim is currently in stable condition in hospital with non-life-threatening injuries.