I know this is pure speculation but one report says "
One possibility is that this 737 may have previously been involved in a tail strike incident on landing or take-off and the damage done to the rear pressure bulkhead was not noticed or not repaired properly causing it to fail, damaging the tail."
Has there been any evidence to support this or are they just making noise?
https://www.airlineratings.com/news/...und-10km-away/