Ruling on a security guard chasing a runaway car which rolled over, killing one of its passengers

Q: I am a staff sergeant L. H. `A. Borders Force. I was assigned a task by my authority, and on my return journey before I reached my headquarters I had suspicions about a small car that was filling up with petrol. I watched it until it left the town crossing the motorway then I, along with all my colleagues who were in my company, chased the car with our official cars. Consequently, the concerned car turned upside down by the traffic circle. We stopped by it and discovered that it was loaded with wine. The point is that one of the car's passengers died as a result of the overturning while the other did not, and the patrol was not held accountable by the concerned authority.Is it Wajib (obligatory) for us to observe any Sawm (Fast) as a Kaffarah (expiation) for involuntary manslaughter?

A: If reality is exactly as what is mentioned in the question, no Kaffarah is Wajib (obligatory) on you or any of your colleagues who were in your company.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.