Over eight years after a Florida woman and her 8-year-old daughter went missing, the FBI has arrested the young girl's father in connection with their disappearance.

Gustavo Castaño Restrepo, 55, was indicted for kidnapping resulting in death for the disappearance of his ex, Liliana Moreno, and the pair's daughter, Daniela, according to authorities. Restrepo appeared in federal court in Miami on Tuesday, and will be back on Friday for a pre-trial hearing.

The U.S. Attorney’s Office for the Southern District of Florida said in a press release that Restrepo is accused of kidnapping Moreno and that the kidnapping resulted in the deaths of Moreno and Daniela.

According to the FBI, Moreno and her daughter were last seen on May 30, 2016, in or near the Home Depot on Okeechobee Road in Hialeah. Moreno was 41-years-old and Daniela was 8 when they went missing. They haven’t been heard from since.

Detectives told NBC affiliate NBC6 that the day they went missing, Restrepo went to pick up Moreno and her daughter, and the couple got into an argument. Restrepo told detectives he then dropped the two off on Turnpike Avenue.

Detectives found unfinished meal preparations and personal belongings when searching Moreno’s home in Doral following the disappearance, showing that she had likely planned to return, according to NBC6.

A few days later, police told NBC6 that they found a suicidal Restrepo in a parking lot with self-inflicted stab wounds. During a confrontation with police, Restrepo lost his right eye after an officer tased him.

In 2021, five years after the disappearance, the FBI listed a reward of $25,000 for information leading to Moreno and her daughter's whereabouts.

NBC6 said that investigators pointed to Restrepo as a person of interest in the case previously but lacked enough information to make an arrest until now. If he is convicted, the mandatory minimum sentence is life in prison and the maximum penalty is death.