In February, an Ontario County, New York man suffered a fatal heart attack, with his 2-year-old subsequently dying of starvation.

According to NBC News, the cause of death for David Conde Sr., 59, and David Conde Jr., 2, has been determined nine months after they were found on February 15 in their home located at the Serenity Manor Apartments in Upstate New York.

The Ontario County Sheriff’s department determined on Tuesday (Nov. 15) that the father died from “cardiovascular disease.” The toddler’s death was ruled death by starvation, ruled accidental by the department.

RELATED: Shanquella Robinson Laid To Rest As The Investigation Surrounding Her Death In Cabo Continues

The pair were last seen on January 22, and family had been worried by their absence. Lt. Joseph Murphy said on Thursday (Nov. 17) that police were called on to execute a welfare check. They were not reported missing.

Investigators say there were no signs of foul play or force of entry. Upon arrival at the apartment complex, officers forced their way into the apartment due to the front door being locked. An employee at the complex was unable to open the door because of the deadbolt lock on the door.

"It is believed that Mr. Conde passed away first, and the child was not able to obtain any nourishment after his father passed," police said.

According to the Democrat & Chronicle, authorities “honestly do not know what caused their deaths at this time” and that there were no signs of trauma.

The outlet notes that Conde Sr., had custody of the child for a majority of his life, being as though the mother was actively involved.

Conde Jr’s obituary says he was born with a medical condition and had recently learned to walk, “following many surgeries and months of casts and rehabilitation.”

He was described as “a beautiful baby boy with curly locks.”