With very little information currenly available, and certainly nothing as yet confirmed, my personal opinion would be this event is unrelated to an approaching aircraft.
It may be one of those situations that will just happen to go unresolved, never confirmed one way or the other. With the amount of traffic BHD handles, and regularly seeing A321, A320 and B737 either presently or in the past, this isolated event would not cause me get concern.
Lets not assume or jump to the conclusion that this was caused by an aircraft, when it may have been something completely unrelated, however whether we ever find out what really happened remains to be seen.