SANTO DOMINGO, Dominican Republic — A pilot and co-pilot from the United States have died in a fiery plane crash as they attempted an emergency landing in the Dominican Republic, authorities said.

The incident occurred Sunday near the southern coastal town of La Romana, according to a statement by the Dominican Institute of Civil Aviation, which identified the pilot and co-pilot as U.S. citizens. It wasn’t immediately known what caused the crash. No passengers were aboard.

MLB All-Star former catcher Yadier Molina said on social media that the plane was bound for Texas to pick him up, along with family and friends.

“My condolences to the pilots and their family!” he wrote. Molina and his group were headed to Puerto Rico.

Officials said the plane had departed from Puerto Rico and landed in the Dominican Republic to refuel before heading to Texas.

The pilot and co-pilot reported an emergency shortly after taking off from the Dominican Republic, authorities said.