The four Police officers behind George Floyd's death and the charges against them

Three US police officers Thomas Lane, J. Kueng and Tou Thao, who were present when Minneapolis police officer Derek Chauvin pressed his knee on African-American George Floyd's neck, were charged with aiding and abetting the murder. Chauvin was also newly charged with second-degree murder in addition to the third-degree murder and second-degree manslaughter charges.

Derek Chauvin, a police officer with the Minneapolis Police Department for nearly 19 years, pressed his knee into George Floyd's neck while Floyd was lying on the street.

The charges: Chauvin was charged with a new, more serious count of second-degree murder. He had previously been charged with third-degree murder and second-degree manslaughter.

The second-degree murder charge says he killed Floyd "without intent" in the course of committing assault in the third degree, according to an amended complaint.

Chauvin was arrested last week and is being held at a Minnesota Department of Corrections facility in Oak Park. His bail was increased to $1 million, court documents show.

J. Alexander Kueng, 26, helped restrain George Floyd along with Derek Chauvin and Thomas Lane.

The charges: Kueng was charged Wednesday with aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter.

He was arrested and is being held on $1 million bail, county jail records show.

Thomas Lane, 37, helped restrain George Floyd, along with Derek Chauvin and J. Alexander Kueng.

The charges: Lane was charged Wednesday with aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter.

Lane was arrested Wednesday and is being held on $1 million bail, county jail records show.

Tou Thao, 34, stood near the other officers as they restrained George Floyd.

The charges: Thao was charged Wednesday with aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter.

Thao, along with Kueng and Lane, was taken into custody Wednesday and is being held on $1 million bail, county jail records show.