Pinal County Sheriff's officials say an 18-year-old San Tan Valley student accused of sexual assault and misconduct with a minor has been re-arrested.
PCSO spokesman Tim Gaffney said Tyler Kost was booked into the Pinal County Jail Thursday night after five more victims came forward.
According to Gaffney, Kost is facing 29 charges including sexual abuse, sexual assault and sex with a minor.
The Poston Butte High School student was arrested Monday and released after his $10,000 bond was met.
Sheriff Paul Babeu reportedly expressed concern that Kost was released on bail after the threats he is accused of making to his victims, despite the fact he has no prior involvement with police.
Gaffney said detectives have requested the teen now be held on a "no bond" status.
The Pinal County Sheriff's Office says they received a call that a male student had sexually assaulted, abused or molested five teenage girls in the area, according to a news release.
In total, it has been discovered that there have been at least 18 victims who say they were sexually assaulted by the student, all between the ages of 14 and 17 years old, according to deputies.
Kost reportedly threatened and harassed one of the victims until she attempted to commit suicide. While the girl was undergoing treatment in the hospital, she received a threatening message from the student, hinting more threats if she returned to school.
Babeu said the sexual assaults and rapes happened in some of the victim's own homes or at community centers. He said one of the victims even got pregnant from the suspect.
Sheriff Paul Babeu stated in a press release, “Serial rapist Tyler Kost was a predator who threatened, harassed, stalked and then either forcibly sexually abused or sexually assaulted his victims. After he was initially booked into custody, his victims felt a sense of relief."
The investigation is still underway and detectives are looking for additional victims and details.
According to Florence Unified School District, Kost has not been expelled, but has been suspended for at least 9 days and must stay off campus. It will be up to the governing board to decide whether to expend the suspension.
Detectives are continuing to investigate and say more charges are pending. Officials said the earliest case started in early 2011 and continued through April 2014.
ABC15 spoke with a 16-year-old student who said the suspect harassed her and sexually assaulted some of her friends.
"He scarred people for life, he scarred me for life, physically and emotionally," she said. "He deserves some repercussions."
Officials said the incident did not happen on school grounds or at school functions. Teachers and administrators said they did not know about the assaults.