A police officer who fatally shot a Black man during a traffic stop outside of Minneapolis on Sunday was likely trying to shock him with a stun gun when she mistakenly used her firearm, authorities said Monday.

Police pulled over Daunte Wright, 20, in Brooklyn Center, Minnesota, Sunday afternoon, for what authorities said was a traffic violation. An officer shot Wright while he was attempting to return to his vehicle, Brooklyn Center Police Chief Tim Gannon said at a press conference , citing newly released police body camera video.

It is my belief that the officer had the intention to deploy their Taser, but instead shot Mr. Wright with a single bullet, Gannon said. This appears to me, from what I viewed and the officers reaction in distress immediately after, that this was an accidental discharge that resulted in the tragic death of Mr. Wright.

The officer was identified by the Minnesota Bureau of Criminal Apprehension on Monday night as Kimberly Potter, a 26-year veteran of the force.

The Hennepin County Medical Examiner said on Monday that Wright died of a single gunshot wound to the chest and that the manner of death is homicide. The office added that homicide is not a legal determination and does not relate to culpability or intent.