An Oklahoma officer is sentenced to life in prison over rapes and sexual assaults as another policeman in Georgia faces jail over manslaughter charges.

Daniel Holtzclaw, 29, was sentenced by a district judge in Oklahoma on Thursday to 263 years in prison for stopping women while out on duty in Oklahoma City and assaulting them sexually.

Oklahoma County District Attorney David Prater had strong words for Holtzclaw, who was convicted last month on 18 counts, including four first-degree rape counts as well as forcible oral sodomy, sexual battery, procuring lewd exhibition and second-degree rape. Holtzclaw was acquitted on 18 other counts committed in 2013 and 2014, US media reported.

"I think people need to realize that this is not a law-enforcement officer that committed these crimes. This is a rapist who masqueraded as a law-enforcement officer," Prater said after the sentencing. "If he was a true law enforcement officer he would have upheld his duty to protect those citizens rather than victimize them."

His lawyer insisted the cop had been trying to help drug addicts and prostitutes as many of the victims had histories of drug abuse or arrest.

The Associated Press highlighted Holtzclaw's case in a yearlong examination of sexual misconduct by law officers, which found that about 1,000 officers in the US lost their licenses for sex crimes or other sexual misconduct over a six-year period.

Georgia Indictment

Meanwhile in DeKalb County, Georgia, grand jury indicted officer James Olsen on Thursday on murder charges in the fatal shooting of Anthony Hill, a black US Air Force veteran who was naked and unarmed at the time of shooting.

The family of the 27-year-old Hill says he was a veteran who struggled with mental health problems.

Olsen killed him on March 9, 2015, when responding to a call of a man behaving erratically outside a suburban Atlanta apartment complex. Witnesses said Hill, reportedly grappling with post-traumatic stress disorder after an Air Force deployment to Afghanistan, had raised his hands or placed them at this sides, and that he did not obey Officer Olsen’s instructions to halt. Police said Hill charged at Olsen before he was shot and killed.

Olsen faces jail on two counts of felony murder, one count of aggravated assault, one count of making a false statement, and two counts of violation of oath by a public officer.

Hill's killing led to protests in Atlanta that mirrored nationwide demonstrations over race, police brutality and excessive force in recent police killings.