Dallas officials refuse to release a 911 recording that police Officer Amber Guyger made the night she shot and killed Botham Jean in his apartment, per Dallas News.

The Dallas Morning News had requested a copy of the 911 call, but in a letter on Monday, an attorney for the city said that the Dallas Police Department and the county’s district attorney’s office had asked Texas Attorney General Ken Paxton to allow them to keep the recording.

Assistant City Attorney Pavala Armstrong argued that the release of the audio would hamper any investigation into the Sept. 6 shooting.

Guyger shot and killed an unarmed Jean after she mistook his apartment for her own and thought that the 26-year was a burglar, she told law enforcement.

Officials had reported that Guyger called 911 in tears after she killed Jean.

The slaying sent shockwaves throughout the country and leaders and activists called for justice for the St. Lucia native.

Mike Snipes, First Assistant District Attorney, said Tuesday that the withholding of the 911 calls would reduce pre-trial publicity and to ensure that the trial would remain in the city and not moved elsewhere in Texas by a judge, according to Dallas News.

Guyger was arrested three days after the incident on manslaughter charges and she was fired on Sept. 24 by Chief of Police U. Renee Hall.