"We believe that several people who were involved in that meeting are the ones who are deceased", Ziman said during a press conference on Saturday.
"He loved God, his family and Mississippi State sports", a cousin wrote in a text to the Chicago Tribune that he said was written on behalf of Pinkard's wife, Terra. Officers found Martin in a rear machine shop; Martin opened fire and officers fired back, killing him, police said.
He was later killed in a shootout with SWAT-team officers who stormed the sprawling plant 40 miles (65 km) west of Chicago.
Wehner grew up in Sheridan in central Illinois, Freeman said.
Zanis said he'd like to make crosses with the victims' names and put them up near Henry Pratt Co. Martin worked at the warehouse for 15 years.
What happened at Henry Pratt?
While it is unknown whether Martin knew he was about to be fired, a company official said he had been going though a discipline procedure and he had been written up before. None of their wounds are considered life-threatening, Ziman said Saturday. They ranged in age from 24 to 59. Two officers were in stable condition, two had already been released from the hospital, and one was expected to be released later Saturday. The other three were treated and released. The suspect killed five of his co-workers and later injured five police officers.
Police identified the five slain workers as human resources manager Clayton Parks of Elgin; human resources intern and Northern Illinois University student Trevor Wehner of DeKalb; plant manager Josh Pinkard of Oswego; mold operator Russell Beyer of Yorkville; and stock room attendant and fork lift operator Vicente Juarez of Oswego.
Trevor Wehner was set to graduate from Northern Illinois University in May.
According to CBS 2 Chicago, after the shooting, police sent a bomb squad to the Aurora Acorn Woods apartments where Martin lived.
"The fact remains that some disgruntled person walked in and had access to a firearm that he shouldn't have had access to", she said. "I ask our university community to please keep the Wehner and Parks families, friends and communities in your hearts and offer them caring thoughts".
Pinkard was an Alabama native, according to WVTM-TV in Birmingham, which obtained a photo from his family.
Aside from his conviction, Martin had been arrested six times by Aurora police on traffic and domestic violence issues. His most recent arrest in Aurora was in 2008 for violating an order of protection.
Martin was killed in the firefight with police.
He was able to buy the Smith and Wesson.40-calibre handgun on March 11, 2014, because he was issued a firearm owner's identification card two months earlier after passing an initial background check.
"During the finger-printing and background process" for a hide and carry permit, "it was discovered that [the suspect] had a felony conviction for aggravated assault out of Mississippi", Ziman stated.
Martin in 1995 was convicted of felony aggravated assault in Mississippi. Police said the conviction would not necessarily have shown up on the background check for a gun owner's license. He also had a 1995 felony conviction for aggravated assault in MS that should have prevented him from buying his gun, Ziman said.
That's what we are determining right now as part of our investigation. absolutely he was not supposed to be in possession of a firearm.
Police said Martin fired off many rounds, and that they lost contact with him in the warehouse for more than an hour.
"He was probably waiting for us to get to him there, is the way that it appeared".