tourist dying in the dominican republican under mysterious circumstances. the woman who passed away, her name is leyla cox. according to her son will cox, who talked to her affiliate wcbs, she died on monday. the u.s. embassy in santa domingo told him she died of a heart attack but he says his mother was healthy, celebrating her 53rd birthday and that she was an active person and she's not aware of her having any heart trouble. we've spoken to the hotel where she passed away in a resort town in the dominican republic. they said she felt ill and had to be taken to the hospital. but will cox told our affiliate wcbs that his mother died in the hotel. so there's still not a lot of clarity to this incident or to the other incidents of americans who died. some may have had previous health conditions. others appeared to die hours