The footage was posted online over the weekend.Mark B. Odom17:04A video circulating online has ignited controversy across Finland after showing an unmarked police vehicle ramming a teenage moped rider off the road in Tuusula, a suburb in the capital region.The incident, which occurred on Saturday evening, left the teenager with non-life-threatening injuries after being forced into a ditch by the high-speed police car.The footage, posted to YouTube over the weekend, has prompted online debate about police conduct and the use of force.In many smaller Finnish communities, mopeds serve as young people's first experience of independent travel. So-called "moped rallies" are a common occurrence, though they occasionally generate noise complaints and prompt calls to police.Investigations launchedAuthorities have confirmed that the police car involved in Saturday's collision had not been dispatched to the scene. Police said three or four patrols were operating in the area at the time, but did not specify how many units may have been present at the scene of the crash.What happened before the filming began remains unclear. Authorities have now opened two separate investigations, one examining the actions of the officer involved, and another focusing on the conduct of the moped driver.The incident has caused distress among young people in the area.Local resident Aapo Hyttinen told Yle: "It's shocking that this happened. It's strange that the police did this."