The property had a fight with the owner.

How did the owner and the property manager get injured respectively?

If the injury is almost complete, there is no need to apologize. Only sometimes, in order to establish a good image, the property management company will pretend that adults don't remember villains and make a gesture of apology to the owners.

Self-defense is everyone's right. In other words, legally speaking, although property personnel are doing property services, they still have the right to self-defense.

The owner pays the property fee, but it does not mean that the owner can break the law by paying the money. This is even more ridiculous! Property personnel who beat people (justifiable defense) may be fined and dismissed by the property company, but justifiable defense is not illegal. If you fight, you fight. It doesn't matter if you go to work in another company.

Generally speaking, there is a rule in the service industry that it is never wrong to call customers. For example, in a hospital, if a patient hits a doctor and the doctor doesn't fight back, the hospital will give the doctor a "grievance award". This kind of report is also common.