Multiple murders in Kansas City over the course of a single year may have been committed by one man, prosecutors said Tuesday. Frederick Demond Scott was charged with murder in the deaths of two men and was considered a suspect in the deaths of three others.

The five murders fit a similar profile: all the victims were white men aged 54 to 57, all the victims were shot and four of the killings occurred in isolated areas near walking trails, according to the Kansas City Star. Scott, 22, was connected to the slayings by way of DNA evidence and was charged with murder and armed criminal action in the deaths of Steve Gibbons, 57, and John Palmer, 54.

“DNA From a screw top bottle found at Gibbon’s homicide scene matched the DNA found on a shirt also at the Palmer homicide scene,” Johnson County Prosecutor Jean Peters Baker announced at a press conference Tuesday. “DNA from a cigarette that Scott was smoking was also matched from that bottle.”

After Scott was charged, a judge entered an automatic not guilty plea until he could be represented by a lawyer, the Johnson County prosecutor’s office told International Business Times Wednesday. He reportedly told police he used a gun they had recovered to kill Gibbons but denied being involved in three of the murders, according to the Kansas City Star. Scott also told investigators he shot Palmer, the Associated Press reported.

There was not yet sufficient evidence to charge Scott in the deaths of the remaining men, Baker said, appealing to the public for help solving the deaths of Mike Darby, 61, David Lenox, 67, and Timothy S. Rice, 57.

“We need the public’s help in solving all of these homicides. I beg for the public’s help,” Baker said Tuesday. “If you have seen the defendant in the area of those homicides or in the area of south Kansas City, please call us. If you heard shots in the area of these homicides, we’re asking that you please call us.”

Investigators had not discerned a motive for the killings, though Scott reportedly told authorities he was angry about the shooting death of his brother in 2015.

“To the families, there’s no motive that makes sense,” Baker said. “There just isn’t.”

Scott remained behind bars at the Jackson County jail. While investigators search for a motive and additional evidence in the multiple homicides, some said Scott’s apprehension would at least provide some relief for residents in the area.

“I think it will bring everybody peace of mind,” John Sharp, a former Kansas City councilman who leads the South Kansas City Alliance told the Kansas City Star. “We had our South Kansas City Alliance problem-solving event on Saturday and a lady told me how much she missed walking on the trials but her adult children wouldn’t let her walk on them anymore.”