Five former Memphis police officers are now facing federal civil rights charges in the beating death of Tyre Nichols as they continue to fight second-degree murder charges in state courts arising from the killing.

Tadarrius Bean, Desmond Mills, Demetrius Haley, Emmitt Martin and Justin Smith were indicted on Tuesday in US district court in Memphis. The four-count indictment charges each of them with deprivation of rights under the color of law through excessive force and failure to intervene, and through deliberate indifference; conspiracy to witness tampering; and obstruction of justice through witness tampering.

The new charges come nine months after the violent beating of Nichols by police officers during a 7 January traffic stop near his home in Memphis. Nichols died at a hospital three days later, and the five officers have pleaded not guilty to state charges of second-degree murder and other alleged offenses in connection with the case.