IE 11 is not supported. For an optimal experience visit our site on another browser.

Mother of teen suspect in killing of Florida 13-year-old charged with evidence tampering

Crystal Smith, 35, was arrested Saturday morning. Her son is charged in the murder of Tristyn Bailey, a cheerleader who was stabbed over 100 times.

The mother of the Florida teenager charged with murdering a 13-year-old cheerleader by stabbing her more than 100 times surrendered herself to police on Saturday on charges of evidence tampering, authorities said.

13-year-old Tristyn Bailey.St. Johns County Sheriff's Office / via Twitter

The boy, 14, who NBC News is not naming because he's a minor, entered a plea of not guilty on Thursday for a charge of first-degree murder of Tristyn Bailey. The 13-year-old was found dead on May 9 in a wooded area of St. Johns, a suburb of Jacksonville.

Authorities said Bailey suffered 114 stab wounds, 49 of which appeared to have been defensive wounds to Bailey's hands, arms and head as she tried to fight off her attacker.

The boy’s mother, Crystal Smith, was arrested Saturday morning in St. John's County and then released on $25,000 bail, according to the St. Johns County Sheriff's Office.

A surveillance camera inside the home of Smith, 35, showed her washing a pair of her son's jeans that later tested positive for blood, according to an arrest warrant. Traces of blood were also found in a sink drain, the warrant said. Evidence tampering is a third-degree felony in Florida.

The suspect was arrested on May 10, just one day after Bailey was reported missing and found dead. It was announced in late May he would be tried as an adult.

Suspect Snapchats while sitting in a police vehicle. He is currently in custody in the killing of 13-year-old Tristyn Bailey in Florida.

The suspect posted to photo to Snapchat the day before his arrest flashing a peace sign in the back of a police car with the caption, “Hey guys has inybody seen Tristyn lately.” He took the selfie when he was only considered a witness and Bailey was still missing.

The suspect had told friends that "he intended to kill someone" by taking them to the woods and stabbing them, according to 7th Judicial Circuit State Attorney R.J. Larizza.

A knife, believed to be the suspect's, was found in a pond near Bailey's body, officials said. The tip of that blade was "broken off" and found lodged in Bailey’s scalp.

It is not immediately clear if the boy’s mother, Smith, has an attorney.

The Associated Press contributed.