According to TMZ, a woman spotted Kueng while he was shopping and captured the confrontation on video, which was posted to Twitter.
Kueng stood idly by on May 25 while his colleague, Derek Chauvin, fatally pressed his knee into Floyd's neck for over eight minutes.
As the woman recorded the video, Kueng confirmed his identity.
Kueng and his two former colleagues, Thomas K. Lane and Tou Thao, are each charged with one count of aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter, as Blavity previously reported.
Kueng said he took Floyd’s pulse and told the other officers he “couldn’t find one," yet Chauvin kept his knee on Floyd’s neck for an additional two minutes, according to court documents.