Two women were detained by police Tuesday after one allegedly threw what she said were the ashes of her niece, who died in police custody, at the Los Angeles police chief during a public event.

CBS Los Angeles reported that Sheila Hines-Brim, whose niece Wakiesha Wilson died while in LAPD custody in 2016, allegedly threw the powder-like substance at Los Angeles Police Chief Charlie Beck during a Los Angeles Police Commission meeting.

“That’s Wakiesha,” Hines-Brim reportedly yelled after throwing the substance.

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Police have not officially identified the substance, but said that it “did land on Chief Beck,” according to the CBS affiliate.

Hines-Brim told reporters later that she received a message from her niece to throw her ashes.

“I heard her clearly tell me. I used her ashes so they can be with him so he can feel her, because he murdered her,” she said. “They covered it up.”

Wilson was found hanging in her jail cell in 2016. However, her family disputed that her death was a suicide, saying she was upbeat shortly before her death.

Wilson soon became a symbol within the city’s Black Lives Matter movement, and the Los Angeles City Council agreed in 2017 to pay up to $298,000 to settle the case surrounding her death.

Hines-Brim and Melina Abdullah, a leader of Los Angeles’ chapter of Black Lives Matter, were both arrested after the incident on Tuesday, CBS Los Angeles reported.

The meeting was called into a recess after the incident and the room was cleared.

Hines-Brim was reportedly charged with battery on a police officer, and both women are expected to be charged with misdemeanors.