what mraz said is right, maybe he want your moneybag, so its not considered as RDM, but if he kill you again for no reason, report him back and i will deal with him.
I just remember when i was going rob bank before this I Saw some money bag dropped while i was innocent then i exited bank with the moneybag and Last_Warning Blasted me up to get Money bag while he had only 6 wanted and i was 4 wanted level...