70-year-old found stabbed to death in Florida in 2017. Police just announced an arrest.

A suspect has been arrested in connection with a murder that occurred nearly four years ago in Florida, police announced.

On Oct. 21, 2017, deputies from the Monroe County Sheriff's Office and firefighters responded to a house fire in the 700 block of Ponce De Leon Blvd. in Key Largo, Florida.

Mary Bonneville, 70, was found dead on the floor in the hallway with knife wounds to her throat, according to the sheriff's office.

Autopsy reports revealed those wounds caused her death, and her death was determined to be a homicide.

DNA evidence was used to link Eddy Lopez-Jemot, 52, to items from Bonneville’s home, such as a beer can and a towel, according to authorities.

Lopez-Jemot was also in the area of Bonneville’s home the night of the murder, according to the sheriff's office.

He was arrested on the same day of the murder for threatening to cut a woman’s head off at a nearby Veterans of Foreign Wars building, approximately 660 feet from Bonneville’s home. But he was later freed.

Miami-Dade Police arrested Lopez-Jemot on Sept. 13 after obtaining an arrest warrant from the Monroe County Sheriff’s Office in connection to the stabbing homicide.

Lopez-Jemot was charged with murder and arson of an occupied dwelling. He is being held on a $1.25 million bail.