A Missouri man who threatened to 'kill all white people' and was already charged with slaughtering three in the Kansas City area was indicted Friday in the murders of three other people.

Frederick Demond Scott, a 23-year-old black man, is now charged in the murders of five white men and one white woman in total, although investigators and prosecutors have not discussed a motive for the killings.

After the indictments, Scott faces a total of six counts of first-degree murder and six counts of armed criminal action in a string of killings that began in August 2016.

Scott was indicted Friday in the deaths of David Lenox, 67, Timothy Rice, 57, and Michael Darby, 61.

Scott (pictured in court in Sept) is now facing six counts of murder and six counts of armed criminal action after being indicted on three new murders Friday

Steven Gibbons, 57 (left), was shot in the head in broad daylight. DNA linked Scott to his murder and to that of first victim John Palmer, 54 (right), police said

Scott has been indicted in connection with the deaths of David Lenox, 67 (left); Mike Darby, 61 (center); and Timothy S Rice, 57 (right)

Scott (left) is also accused of killing a homeless female, Karen Harmeyer (right) whose body was found in her tent by her friends

Scott's mother previously told authorities and The Kansas City Star that her son is schizophrenic.

All five of the male victims were shot as they walked on or near the Indian Creek trails or, in one case, walked home after getting off a bus. The female victim was homeless and her decomposing body was found in a tent in woods in Grandview. She also was shot, police said.

Kansas City Police spokesman Lionel Colon said he has 'no information that suggests the investigation' into other potential victims.

Scott made his comment about wanting to kill people while he was a student in January 2014 at an alternative school near Kansas City, according to a municipal citation for harassment regarding the case.

His mother said she did odd jobs for white people and she wasn't aware he had any problems with them.

The first victim was John Palmer, 54, who was shot August 19, 2016. His body was dragged off the Indian Creek Trail and was found in nearby woods.

The last victim, Steven Gibbons, 57, died August 13, 2017, after he got off a bus in south Kansas City. The woman, 64-year-old Karen Harmeyer, was found in her tent by friends.

Lenox was killed February 27, 2017, as he was returning home from walking his two dogs. His daughter, Mindy Lenox of San Francisco, told The Star that she and her family appreciated the efforts of investigators and prosecutors to provide a charge in her father's death.

Scott (left) said he was angry about his brother's death in a robbery in 2015. The man convicted of that killing, Jimmie Verge (right), was sentenced to 45 years in prison

Many of the victims were found close to the Indian Creek Trail and its associated trail, leading to the deaths being dubbed the 'Indian Creek Murders'. The slain men were John Palmer (1), David Lenox (2), Timothy S Rice (3), Mike Darby (4) and Steven Gibbons (5)

'We're thankful that he is off the street and hopefully he'll be held accountable for what he has done,' Lenox said.

'I don't know for me personally that there is any closure. Nothing can bring my dad back and nothing can take that pain away, but at least knowing that the person responsible will be held accountable, it will certainly be helpful.'

Rice, of Excelsior Springs, was found dead from multiple gunshots on April 4, 2017, inside a shelter at a park where he was camping, his family said.

Darby's son, Brian Darby, said Friday he appreciated the work of police and prosecutors. 'I feel like we are one step closer to where we need to be,' he said.

Scott was arrested after Gibbons' killing, when surveillance video showed Scott following Gibbons, according to court records.

Detectives later linked Scott to the scene with DNA from an iced tea bottle and a cigarette butt. He was linked to the Palmer killing with DNA from a T-shirt left at that scene.

He has pleaded not guilty to the three initial charges of murder.

In an interview with The Star, Scott's mother that her son (pictured) refused to get treatment for paranoid schizophrenia but did not show any hatred toward white people