ARLINGTON, Texas (CBSDFW.COM) – Arlington Police said Friday that Timothy Simpkins, accused of shooting four students at Timberview High School in October, has been arrested again.

A department spokesperson said that Simpkins, 18, had been arrested for an alleged “violation of his bond requirements and is now being held at the Tarrant County Jail.”

READ MORE: Dallas Police Searching For 3 Juvenile Males Suspected Of Violently Abusing A Cat

Part of Simpkins’ bond conditions were to abstain from drug use and not to possess alcohol. Online court records show that a urinalysis drug test came back positive, although they did not say what that test came back positive for.

Timothy Simpkins, 18, was arrested again on Dec. 24 for violating his bond agreement. (Credit: Tarrant County Jail)

READ MORE: At Resentencing Hearing ‘Tiger King’ Joe Exotic Gets One Less Year, Now Must Serve 21 Years In Prison

Tarrant County Jail records indicate that Simpkins was arrested on Dec. 23 and is still facing three charges of Aggravated Assault With A Deadly Weapon in relation to the October 6 shooting. His bond has been set at a total of $79,500.

Simpkins’ attorney has stated that the shooting was a result of “pervasive bullying” at the high school, a claim which Arlington Police deny.

MORE NEWS: Plano Police Arrest Adrien Javon Grant, 29, Accused Of Shooting Jesaias Hiram Nieves

Police Chief Al Jones said the department’s investigation did not uncover evidence of bullying being involved in the shooting, and alleged that Simpkins was involved in “high-risk activity” with another student. Staff