Who is responsible when police damage my private property slope?

A sewer drainage line runs in front of my house, and the platform of my front and entrance gate is adjacent to it. Since I park my vehicle inside my house, I use a slope built over that drainage for my convenience. Recently, a police vehicle from my local station drove over it while reversing their vehicle, even though they had plenty of space to do so on the main road. As a result, the slope is now damaged, and I am being asked to repair it. Can I file a claim against the police department since the damage was caused by their fault?