Alexander Kueng, Thomas Lane and Tou Thao were arrested Wednesday and appeared in court the next day to be charged with aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter.

Lane and Kueng helped restrain Floyd, while Thao stood nearby.

Chauvin, 44, was arrested last week and charged with third-degree murder and second-degree manslaughter.

But on Wednesday prosecutors charged him with a more serious count of second-degree murder.

Chauvin is expected to appear in court next week.

But Philonise Floyd says the charges aren't enough.

"I'm never going to be in comfort until those officers are arrested for first-degree murder, not second-degree, not third-degree," Philonise Floyd said.

"That was premeditated, and I want justice."

Protesters and police

Though the demonstrators calling for justice for Floyd are under curfews in many cities and have clashed with police in recent days, Thursday's protests were largely peaceful.

CNN has reached out to the Atlanta Police Department for comment and to find out whether the officer involved faces disciplinary actions but have has not yet heard back.