I scattered my fathers ashes in my backyard. Two siblings are now PR, what can they do to me for doing this?

I have 4 siblings and I was alone when my father died. I had him cremated, signed the death certificate and paid the bill. I then scattered my fathers ashes in my backyard. My sister used an outdated will because my dad didn't leave an updated will. Now Two siblings are PR and we're going through probate, and wants my dads ashes to be buried but I already scattered them. What can they do to me? I live in California.