Schaumburg police on patrol noticed a visual fire alarm activated at 2255 Pennview Lane about 1:23 a.m. Thursday and requested firefighters to the scene to check the alarm. Firefighters cleared the scene after a short time, but police were still on the scene.
Police were out with two suspicious autos about 1:45 a.m., when they called for backup and were investigating at least three subjects. While investigating the subjects, police reported a disturbance and saw multiple subjects running out of an apartment, and called for backup.
About 1:55 a.m. police reported a disturbance inside an apartment that was blocked at the door. Police reported a female subject — apparently injured — that was calling for help inside the apartment. Police requested firefighter/paramedics to the scene for forced entry and to check on the female, who was inside an apartment unit at an apartment building with the address of 2243 Pennview.
Police held their positions about 2:15 a.m. as they requested NIPAS Emergency Response Team (SWAT) for a barricade situation. Hoffman Estates police assisted Schaumburg police early before the NIPAS and ILEAS response brought in extra police. NIPAS or Northern Illinois Police Alarm System is a mutual aid force that provides specialized police operations, including SWAT (special weapons and tactics). ILEAS is the Illinois Law Enforcement Alarm System consisting of a mutual aid system of police officers that provides services ranging from traffic and crowd control to anti-terrorism support.
Three additional Schaumburg Fire Department ambulances and other fire heavy rescue equipment were called to the scene about 4:35 a.m.
Residents in the area were warned by reverse 9-1-1 to stay in their residents about 4:38 a.m. Some residents came out of their apartment units to see what was going on outside and were told to stay in their apartments or were escorted out of the area.
SWAT personnel moved in to position about 5:05 a.m. and moved in to the unit just before 6:30 a.m.
Hoffman Estates police responded with a prisoner transport vehicle for a transport of at least 15 people. The people were transported to Schaumburg Police Department Headquarters.
Police reported about 6:30 a.m. that one person inside the building was not responsive. The person was transported to a local hospital.
Much of the fire equipment that was standing by or actively working at the scene was returned by about 6:40 a.m. Schaumburg police are investigating the incident.