Derek Chauvin

The judge said Derek Chauvin's sentence was based "on your abuse of a position of trust and authority, and also the particular cruelty shown" to Mr Floyd.

Mr Floyd, 48, died after Chauvin knelt on his neck for nine minutes.

His murder caused global protests against racism and police brutality.

Chauvin, 45, was convicted of second-degree murder and other charges last month. During his trial, his lawyer described the killing as "an error made in good faith".

Chauvin was also told to register as a predatory offender and was barred from owning firearms for life.

In a series of motions filed to District Court Judge Peter Cahill, Chauvin's attorney, Eric Nelson, said his client was deprived of a fair trial, adding there was prosecutorial and jury misconduct, errors of law at trial and that the verdict was contrary to law.

On 20 April, a 12-member jury found Chauvin, 45, guilty on all three counts he faced after considering three weeks of testimony from 45 witnesses, including bystanders, police officials and medical experts.

Derek Chauvin, who is white, was shown in footage kneeling on 46-year-old George Floyd's neck on Monday. He and three other officers have been sacked.

Days of looting and arson in the Minnesota city have boiled over into nationwide protests.

The case has reignited US anger over police killings of black Americans.

Hennepin County Prosecutor Mike Freeman said Mr Chauvin was charged with third-degree murder.

He said he "anticipates charges" for the three other officers but would not offer more details.