For some reason, the Italian police are driving around in pre-facelift Alfa Romeo 156 cars. These would be around 25 years old at the time the film is set. Police forces, even the Italian police force, do not use vehicles of that age.
In a scene with an egregiously bad CGI fireplace, the LED light simulating the fire is clearly visible in reflections, and you can see the separate RGB lights shifting proportions on the walls.
At 36 min. On the river, a wake from the camera boat in front of the subject is visible. Very next shot, from behind, shows no boat in front of subject.