Police say tires were placed around the speed camera and then set to fire, destroying the device.
It was set up on the Brankas and Ozolnieki intersection to make sure drivers comply with the 70 km speed limit. Firefighters were called to the scene at 2 a.m. September 20 by passersby.
"We've started a criminal procedure and an investigation is ongoing. I can say it was definitely arson according to what was seen in the scene," said State Police representative Tatjana Flandere.
The crime carries up to ten years imprisonment.
Early this April a speed camera was set on fire using similar means in Jaunmārupe near Rīga, while another one was burned in early June in Jūrmala. No suspects have been apprehended as of now.
Latvia's Road Traffic Safety Directorate says the camera was insured and it will soon be replaced.
