First Lt. Sonagnon Dabli, a bioenvironmental engineer at Keesler Air Force Base, Mississippi, died Tuesday.

Base officials would provide no details about the circumstances of Dabli’s death other than that he died at 8:45 a.m.

Dabli, a native of Benin, Africa, joined the Air Force on Jan. 2 in San Diego when he was 29. He was assigned to the 81st Aerospace Medicine Squadron at Keesler.

The 81st AMS bioenvironmental flight ensures occupational and environmental safety standards are upheld to ensure the health of the more than 14,000 Keesler personnel and their dependents.

“We are deeply saddened by the loss of Lt. Dabli,” said Col. Lance C. Burnett, vice commander of the 81st Training Wing, in a news release. “Sonagnon was relatively new to Keesler and the Air Force, but his infectious personality was known to whomever he met, and he was a treasured member of the 81st Training Wing. Our thoughts and prayers are with his family and friends.”

A press release from the 81st Training Wing stated that there is an investigation into the circumstances surrounding Dabli’s death.