Something like this happened to me, but I don’t blame the pit - I blamed the owner. If you want a picture of an irresponsible owner this one nailed it.
It was a giant - way up to the end of size range -pit, unneutered (seriously - it had giant testicles that were the first thing you noticed ) wandering around loose. Then they sent their kid out to bring it home, which consisted of a little child chasing the dog around for hours screaming at it as it wandered on people’s porches and yards almost a mile from home. The people insisted they were moving and it was a rare chance it got out.
Several months after that dog killed my animal, I was in a vet and a woman was complaining that a pit had been wandering into her yard all the time and she was worried about her little dogs. Yep, you guessed it -same dog.
This one was not the dog’s fault, IMHO. If I were the law, I would have come down on those folks so hard they would seriously regret it. I made the woman aware of the police report. I’m going to follow up.
The dog killed your animal, but you don’t think the dog is at fault? Okay. Did any other neighborhood dogs kill any of your animals? Didn’t think so.