After intentionally slamming his car into another vehicle in downtown Chicago, a west suburban man stabbed a security guard who tried to help at the crash scene before a police sergeant shot the assailant as he threatened her, prosecutors said.



Nomad Khan, 20, of Westmont was charged with four counts of attempted murder — two involving the crash and two involving the knife — after the incident early Saturday morning in the Loop. He was in fair condition Sunday afternoon at Northwestern Memorial Hospital, officials there said.



The security guard, 32-year-old Elizabeth Jackson of Melrose Park, was released from Northwestern after suffering a slash in the shoulder and a stab wound about an inch deep in the back, she said.



"I was just trying to be a good Samaritan and help out because there was a car accident," she said, "not knowing that I was going to get hurt."



As Khan was hospitalized Sunday morning, Cook County Judge James Brown ordered him held on $900,000 bond on the four attempted murder charges and a count of aggravated assault on an officer.



About 2 a.m. Saturday, Khan sped a Nissan Maxima into the rear of a vehicle preparing to turn at Monroe and LaSalle streets, hurling that automobile through the intersection and into a light pole, authorities said. The Nissan also sailed through the intersection and hit the vehicle a second time, trapping the two occupants of that automobile inside, said Assistant State's Attorney Terry Clancy.



Jackson, a security guard who patrols banks in a vehicle, was passing by and stopped to help, she said. She asked Khan if he was OK, but he responded by shouting and then advancing on her, she said. As he attacked, Jackson put her arm up to block him and saw that he held a knife, so she turned to run, she said. She knew immediately she was hurt because she could feel that her shirt was wet with blood, she said.



Jackson locked herself in her vehicle, she said, and watched as a Chicago police sergeant arrived. Khan charged at the sergeant with the knife and threatened to stab her, Clancy said. After repeatedly demanding that he drop the knife, the sergeant shot him in the hip, Clancy said.



Khan, of the 1000 block of Beninford Lane in Westmont, later told paramedics he intended to crash the vehicle, Clancy said, though the prosecutor did not explain any potential motive. The occupants of the vehicle suffered minor injuries, Clancy said.



dhinkel@tribune.com