The suspect escaped and now police are checking recordings from surveillance cameras. Chicago police describe the man as between 20 and 30 years old, 5 ft., 8 in. to 6 ft. tall. He was carrying a dark colored single strap back pack.
The attack took place Monday evening in the doctor's office in the 2900- block of North Commonwealth on the city's North Side.
The assault occurred about 6:45 p.m. on Monday in the Manor professional building. The attacker entered the building, made his way to the upper floor office of a center that specializes in behavioral health and addiction treatment. The victim, said to be a psychiatrist in her 30's, was alone in her office. The attacker put a knife to her throat. The two struggled. The doctor was punched in the thigh but somehow managed to wrestle the knife away from him and cut both hands.
There are security cameras in the building, external and internal. One of those internal cameras captured a significant still image of the attacker as he was either leaving or arriving in the office building.
If you know the man in the surveillance pictures, call Chicago police.