A tragic discovery unfolded in Florida as the lives of a U.S. Coast Guard officer, his wife, and their children were cut short, all suspected victims of carbon monoxide poisoning. The harrowing incident occurred just hours after a casual phone conversation between the officer and his mother.

The Marion County Sheriff’s Office reported that the lifeless bodies of Yohan Sanchez, 33, his wife Rebeca Santos, their 15-year-old son Michael Melendez, and 2-year-old son Samuel Sanchez were found in their Ocala residence, approximately 70 miles from Orlando. The discovery was made during a “welfare check” conducted around 10:30 p.m. on Friday.

Jackie Soto, Sanchez’s devastated mother, recounted her final conversation with her son, expressing disbelief and sorrow. “I don’t believe it. This is my baby,” she shared with Fox 35. Their exchange had been a typical, brief chat, with Sanchez mentioning that he was in the process of baking a cake.

Authorities have determined that foul play is not a factor in this heartbreaking case, suggesting instead that the family fell victim to carbon monoxide exposure. The gas, known for being extremely toxic and odorless, is suspected to have led to their untimely deaths.

She described their conversation as brief and routine, adding that he was baking a cake at the time.

Authorities said foul play is not suspected and that the family appears to have been fatally exposed to the extremely toxic, odorless gas.

“Investigators suspect the deaths may be the result of carbon monoxide poisoning; however, the official cause of death is pending confirmation from the Medical Examiner’s Office,” the Sheriff’s Office said.

Detectives are continuing to investigate the deaths.

“Our thoughts are with their loved ones during this incredibly difficult time,” the department added.

Sanchez’s sister, Noel Sanchez, said her brother “proudly served” in the Coast Guard Reserve before retiring last year, she wrote on a GoFundMe page set up to help cover funeral costs for the young family.

The veteran’s brother, Sendy Sanchez, told WESH 2 that the family’s pastor first checked on them Thursday after they missed a church event, but left when the home appeared dark and quiet.

When the pastor returned on Friday and again received no answer, he called 911.

Neighbor Alexander James told the outlet the family was “real nice,” saying they had lived at the home for about 10 months and maintained a good, neighborly relationship.

His brother also told the outlet that Sanchez and Santos met at church in Massachusetts before moving to Florida about a year ago.

Sendy described his brother as a deeply devoted Christian who dedicated his life to his family, faith and public service.

“Nobody’s expecting this type of tragedy,” he said. “We’re just devastated.”

Ocala Christian Academy administrator Randy Osborn told the Ocala Star-Banner that Michael, a ninth grader at the school, was deeply engaged in his church community and had been preparing to preach Thursday evening.

Faculty “commended his leadership abilities and his desire to study the Bible,” Osborn said.

“He enjoyed playing the piano, but more importantly, strived to serve God and others.”