TALLAHASSEE, Fla. — Court documents obtained by ABC and shared with First Coast News Thursday reveal new details about the early life of Phoenix Ikner, the 20-year-old accused of a mass shooting at Florida State University.

Ikner changed his name in 2020, law enforcement sources confirmed to ABC News. He is referred to in court documents as Christian Gunnar Erikson, which was his name until 2020. (He will be referred to as Phoenix Ikner in this story.)

Leon County Sheriff Walter McNeil identified Ikner as the son of Deputy Jessica Ikner. However, documents show Jessica Ikner is his stepmother and his biological mother is a woman named Anne-Mari Eriksen. 

The documents show a tumultuous relationship between Ikner’s father and Eriksen.

In 2015, Eriksen was arrested on a kidnapping charge after she violated her custody agreement and took Ikner with her to Norway without permission.

An affidavit for her arrest shows she told Ikner’s father she was taking him to South Florida and then “fled the country with him.” 

Ikner’s father told police that his son “has developmental delays and has special needs which he feared would not be taken care of.” The document later identifies that Ikner was on medication for a growth hormone disorder and ADHD.

The affidavit says that Ikner’s mother failed to have him in school for testing, missed doctor’s appointments and failed to administer his medications while he was in Norway.

Eriksen was arrested on July 27, 2015, at the Fort Lauderdale-Hollywood International Airport. She was booked in the Leon County Jail on charges of kidnapping a minor child and removing them from the state.

She entered a no contest plea and was therefore ruled guilty on July 14, 2016, sentenced to 200 days in prison with credit for 170 days of time served, followed by two years of community control and two more years of probation.

Documents also show an unsuccessful civil lawsuit by Anne-Mari Eriksen, where she sued Ikner’s father, his wife and two other relatives. Ikner (as Christian Gunnar Eriksen) is also named as a defendant. He was 11 years old at the time. 

The lawsuit says Eriksen is seeking damages for multiple reasons, including “emotional abuse and psychological harm done to the minor son of the undersigned… during continuous and vicious litigation in family court.” 

Eriksen made several accusations against Ikner’s father and stepmother, including saying Jessica Ikner had written “unwanted” letters to her and put them in her son’s backpack. She also accuses Jessica Ikner of striking her son. 

The suit concludes, “Christian Gunnar Eriksen is the victim of psychological and emotional abuse, as well as parental alienation.” Eriksen asks the court to award her $80,000, which she says will be put into her son’s college fund.

A judge dismissed the lawsuit seven months later. Documents show he dismissed the suit “sua sponte” which means he decided on his own to dismiss the suit, not because of a request from either party.