Jesse Taylor IV was reported missing on Sept. 3, 2013, after his father hadn’t seen him in more than a month. Months later, his skeletal remains were found in the elevator shaft of an abandoned building in Central City.

Now, after a forensic investigation, his death has been ruled a homicide, police said Friday.

Still, many of the details about his killing remain a mystery.

An elevator repairman working at an apartment building at 2616 S. Claiborne Ave. found the 25-year-old victim’s remains the morning of April 24, authorities said.

The Orleans Parish Coroner’s Office collected the bones for an investigation.

A later examination by the LSU FACES — or Forensic Anthropology and Computer Enhancement Services — Laboratory concluded that Taylor suffered trauma to his body, leading the coroner to rule the death a homicide, said Officer Frank Robertson, a Police Department spokesman.

Authorities have not said when or how they believe Taylor was killed. Attempts to contact officials with the FACES Lab were unsuccessful.

Dr. Jeffrey Rouse, the Orleans Parish coroner, said Taylor had been dead for at least several months when the skeleton was discovered.

He declined to discuss specifics of the cause of death, citing the ongoing police investigation, but said the trauma found on the remains was not the result of a fall.

The apartment building where Taylor’s body was found was heavily damaged during Hurricane Katrina and had been unoccupied since the 2005 storm.

Follow Danny Monteverde on Twitter, @DCMonteverde.