This is probably the cay they got stranded.
22° 7'55.05"N 74°18'55.61"W
Usually it's bad fuel management like not knowing the absolute FOB, or not using the fuel valves properly. Only the final report will confirm the actual cause.
When I was flying the Bahamas I was told to watch out for situations where fuel is "permanently borrowed" by locals, and to do an absolute measurement of FOB just before TO.