A second lawsuit has been filed in last month's deadly workplace shooting in Aurora.
Vicente Juarez was one of five people killed by gunman Gary Martin at the Henry Pratt factory.
RELATED: Aurora shooting: 5 dead, multiple wounded including officers at Henry Pratt Company; gunman also dead
The Juarez family joins another victim in suing Illinois State Police.
Earlier this month surviving victim Timothy Williams filed a $2-million lawsuit against ISP claiming the gunman would have never had a weapon if state police did their job correctly.
RELATED: Aurora mass shooting victim sues Illinois State Police
William's legal team said state police missed Martin's violent criminal history when the department issued him a firearms owners ID card - or a FOID card, which allowed him to buy the gun he used in the shooting.
RELATED: Aurora shooting victims: What we know about those killed in Henry Pratt warehouse shooting
Illinois State Police said they cannot comment on pending litigation.
Henry Pratt shooting victim's family sues Illinois State Police