BLOOMINGTON, Ind. (AP) — The FBI has opened a hate crime investigation into an attack on a Muslim woman in which police say a 19-year-old college student shouted racial slurs and tried to remove her headscarf.

FBI Special Agent Wendy Osborne tells The Herald-Times there is no deadline for concluding the investigation into Saturday’s incident in Bloomington, Indiana.

Bloomington police say Triceten Bickford of Fort Wayne, Indiana, assaulted the 47-year-old woman outside a Turkish cafe.

Witnesses say Bickford shouted “white power,” ‘‘kill the police” and an anti-black racial slur. He’s also accused of trying to remove her headscarf and restricting her breathing.

Indiana University expelled Bickford following reports of the attack.

Bickford is scheduled to appear in court Friday on felony charges of strangulation, intimidation, battery on a police officer, and misdemeanor charges.