BALTIMORE - Eyewitness News has new details on the investigation into the death of a Monroe teen who was killed while visiting her family in Baltimore.
Channel 9 obtained court documents that show Phylicia Barnes' sister was trying to keep her ex-boyfriend away from her. He was reportedly the last person to see Phylicia alive.
Phylicia was visiting her sister, Deena Barnes, in Baltimore in December when she disappeared. Phylicia's mother, Janice Sallis-Mustafa, told Eyewitness News she only let Phylicia go on the trip because Deena promised that Johnson and other men would not be at the house.
"I had no clue that all of these guys -- she had two or three male roommates and Michael Johnson was still there with a key," Sallis-Mustafa said.
Family members said Johnson and Deena were broken up at the time, but that he was still in and out of her apartment. He was one of several people questioned by police after Phylicia disappeared.
Less than two months later, in February, Deena Barnes filed a petition for a restraining order against Johnson. In it, she said she felt fearful because Johnson contacted her during the investigation into her sister's disappearance, even though the two were instructed not to have contact with each other during that time. The judge denied the request, but it's not clear why.
Investigators found Phylicia's body in a Maryland river in April.
Police confirmed her death was a homicide, but they haven't released a cause and haven't made any arrests.
Phylicia's mother said not knowing is the most difficult part.
"I feel like snapping every single day," she said. "I don't even know how I can go on."
Phylicia Barnes' Sister Wanted Restraining Order Against Ex-Boyfriend
Father defends HS football player son accused of sex assault, says 'a…
Tacoma police officer shot, killed: Latest updates
WATCH: Man steals $1.6M bucket of gold flakes, police say
Teen arrested for climbing One World Trade Center scales other New York…