Milwaukee police are searching for the man who robbed a 73-year-old man in a wheelchair at an ATM earlier this month. The suspect got away with $400.Investigators say the suspect was casing the U.S. Bank near 25th and Wisconsin on October 2nd. After he exited the building, he attacked the man in the wheelchair who was withdrawing money from the ATM outside.The suspect forcefully grabbed the money from the victim and knocked him out of his wheelchair. The victim suffered a slight head injury.Police are looking for a man who fits the following description...* Male, black* 25 - 35 years old* 5'10" - 6' tall* Medium build* White hooded sweatshirt with black design on front* Dark jeans with white or gray design on right thigh* Black tennis shoesIf you recognize the suspect, you're urged to call Milwaukee police.