ATLANTA (AP) A white 16-year-old girl is accused of plotting to attack a mostly black church in a north Georgia city, where police say she planned to kill worshippers because of their race.

Bethel African Methodist Episcopal Church has a predominantly black congregation, Gainesville Police Chief Jay Parrish said in a Tuesday statement.

Our investigation indicated the church was targeted by the juvenile based on the racial demographic of the church members, he said.

Students, school administrators and law officers worked together to thwart a potentially horrific incident, he added.

The plot came to light when Gainesville High School students told administrators the 16-year-old had a notebook with detailed plans to kill worshippers at the church, Parrish said.

It just grieves my spirit on a number of different levels, one that the intentions of this young person were so calculated to do great harm against people who just simply had no knowledge of such a plot, said The Rev. Rose Johnson Mackey, director of the Newtown Florist Club, a civil rights organization founded in Gainesville 70 years ago.

The girl is charged with criminal attempt to commit murder, the police chief said. Shes being held in a youth detention center in Gainesville.

Specific details of the alleged plot havent been released, but Parrish said it came to light Friday when school administrators contacted police.

Were just very pleased that our police department acted so swiftly, and the police department in conjunction with our school administrators were just on top of the situation, Johnson said.

Gainesville is about 50 miles (80 kilometers) northeast of Atlanta. Its a city of just over 40,000 people, about 17% of whom are African-American.

The alleged plot comes amid a long history of black churches being bombed, burned and shot up across the South hate crimes that continue today.

White supremacist Dylann Roof fatally shot nine black church members during their Bible study lesson at Emanuel AME Church in Charleston, South Carolina, during the summer of 2015. Roof later told FBI agents he had hoped the killings would perhaps start a race war.

More recently, the white son of a sheriffs deputy was arrested in April and accused of a setting fires that destroyed three black churches in rural Louisiana. Holden Matthews is awaiting trial on arson and hate crimes charges in the Louisiana church burnings.

In the Georgia case, police did not release the girls name Tuesday.