A large police response was sent to a meat packing warehouse in Mundelein after there was a report of a person with a gun inside the building Monday afternoon, police said.
The Mundelein Police Department received a 911 call at 1:13 p.m. Monday reporting a man with a gun who was threatening employees at the Ruprecht Company, 1301 Allanson Road.
“911 operators attempted to obtain additional information but the caller advised his phone battery was going to die and ended the call,” the Mundelein Police Department said.
Mundelein police officers along with officers from Libertyville, Vernon Hills and the Lake County Sheriff rushed to the scene. Authorities met with administrative personnel from Ruprecht and learned that there were no other reports of this incident.
An evacuation was ordered and a search of the building was conducted by police, who did not find anything inside. The employees were then allowed to return to the building.
Allanson Road was shutdown to vehicle traffic for two hours between Butterfield Road and Washington Boulevard while police investigated the incident.
Investigators are actively working to try and identify the 911 caller, officials added.