Moore said Jester seemed fine when she spoke with him during his trip. She told WSB that Jester told her he drank a soda that didn't taste right.
Moore said she got a call from her daughter the next day.
"She called me about 3:30 in the morning and she told me he was calling her, saying he couldn’t breathe, just saying, 'Mama, I can’t breathe. I can’t breathe'", Moore said.
Her daughter called 911, but it was too late. Moore said that her son's death certificate says he died March 17 of "respiratory illness," but she said she feels her son’s death is connected to those of the other 11 American tourists who have also died in that country since June 2018.
She said she called the FBI and an investigator put her son's name on a list of people who have died in the Dominican Republic in recent months. ABC News reported she has not yet met with anyone from the agency. Moore told WSB her son was healthy and never had any health issues.
"Being a mom, I want to go to where he was, where he died at last. Something is wrong. My son is gone. Something is really wrong," Moore said.
"We can confirm the death of a U.S. citizen in the Dominican Republic in March 2019," a spokesperson for the U.S. State Department told ABC News in a statement. "We offer our sincerest condolences to the family for their loss. Out of respect for the family during this difficult time, we do not have additional information to provide."
Jester's sister told WSB her brother had lupus. It's unclear if the illness was connected to his death.