This is reported by the ABC TV channel.
According to the channel, during the arrest of Floyd, former police officer Keng was kneeling on his back.
The accused pleaded guilty.
Earlier it was reported that former American police officer Derek Chauvin, convicted of the murder of African American George Floyd, was sentenced by a court to 22.5 years in prison.
Black George Floyd died at the end of May 2020 shortly after being detained by police in Minneapolis.
One of the policemen held him down with a knee on his neck.