19-year-old Joshua Dukes was arrested by Jackson Police and SWAT on March 21, suspected in the robbery and murders of Daniel Gomez and Eli Nunez,
At the time, officers had no idea he would soon be charged with two other homicides.
But over time, as he sat in jail, police would uncover evidence linking him to the shooting death of James Hankins, outside Hankins' home back in February.
Hankins was shot in the head and his wallet stolen.
Jackson Police Chief Lee Vance say Dukes is now one of two people involved in the November robbery and shooting death of O'Reilly's Auto Parts employee Brodrick Smith.
"I think everybody in Jackson was angry, upset and outraged both at Mr. Smith's murder and how it was carried out, basically as an execution," Chief Vance says.
Smith was shot multiple times.
"Mr. Smith was murdered because he did not know how to open the safe," adds Vance.
Chief Vance says investigators have been developing leads connecting Dukes to Smith's murder for a few weeks, but in the past few days physical evidence came along that led to the new charge.
During the press conference, Vance described Dukes using the term "serial killer".
Vance says Dukes' fate is now up to the courts.
"It's just a matter of whether or not the rest of the justice system will hold him accountable," he says.
Jackson Police continue to search for the second person involved in Smith's murder.
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