Another CVR leak (according to Interfax). In short. "Some strange sounds in last sec before end of tape, but crew doesn't make any distress calls".
Consistent with a mid-air explosion / separation. The CVR / FDR are located in the H/S Bay. If there is a sudden removal of the rear end of the AC then all that will be on the recording is the start of the explosion, up until the CVR becomes electrically detached from the audio system in the front of the AC.