WHEATON , Illinois ( AP ) -- A gunman who took a dozen hostages in a suburban Chicago bank after wresting a gun from a police officer Friday died after shooting himself in the head , police said . Hostages were released Friday after a gunman killed himself in suburban Chicago , police say . The standoff began around 1:30 p.m. , after a Wheaton police officer responded to a call of a hit-and-run accident near the bank . When the officer arrived , the suspect grabbed the officer from behind , held a knife to his throat and demanded his gun , Deputy Chief Thomas Meloni said . During an ensuing struggle , the officer was cut on a forearm and the suspect was able to take the gun and run the lobby of the Wheaton Bank & Trust , where he ordered everyone to the floor , Meloni said . Police in Wheaton , about 20 miles west of Chicago , did not immediately release the gunman 's identity . As officers evacuated nearby businesses and homes and shut down streets and rail service , hostage negotiators talked to the gunman by phone . They were able to persuade him to release 10 hostages , leaving two behind , Meloni said . `` At one point the suspect began to close the blinds from inside the bank and he disconnected the phone contact with the hostage negotiators , '' Meloni said . Shortly afterward , about 4:15 p.m. , officers heard a single gunshot and they rushed in , Meloni said . He said the man was dead of a single gunshot wound to the head . A spokeswoman for Central DuPage Hospital , Amy Steinbruecker , said the hospital treated and released the police officer who scuffled with the suspect for minor injuries . Television footage showed dozens of people running from the four-story bank building , which includes other businesses , with their hands above their heads . `` We locked our office door , turned off the lights , drew the blinds , '' said Donna Price , 52 , of McHenry , who works in the office building . `` Then we heard a knock on the door and it was a SWAT guy . He told us to get out right now . `` I said , 'Let me get my purse . ' He said , 'No , now . '' ' Price said police held people in a stairwell of the building before ordering them out . `` We all had to put our hands up on the back of our heads and run , '' Price said from a convenience store across the street where more than 100 people were crowded .
Gunman held a dozen hostages in a suburban Manhattan bank vault . Police : Suspect held knife to man 's throat and demanded his surrender . Suspect was found with a bullet wound to his head , police said .