Florida Mom Catches Alleged Serial Robber Son She thought she saw a familiar face while watching surveillance footage on the news By Michael Harthorne, Newser Staff Posted Jul 7, 2016 3:48 PM CDT 46 comments Comments Keith Knowles Jr. (Broward County Sheriff's Office) (Newser) – Authorities say a 27-year-old Florida man was charged with multiple drug store robberies this week after his mom recognized him on the news, the South Florida Sun Sentinel reports. According to CBS Miami, police were looking for a man responsible for robbing four Walgreens locations between June 11 and June 25. The suspect would act like he was going to pay for an item, then punch or push the cashier when they opened the cash register, grabbing cash and running off. The Broward County Sheriff's Office released surveillance footage from the robberies, and the mother of Keith Knowles Jr. saw the videos on the news. She confronted her son, who she believed was the man in the footage, and authorities say he confessed to her before turning himself in Sunday. Knowles has been charged with four counts of robbery, one count of theft, and one count of battery on a person over 65. Authorities believe he may be responsible for two additional robberies as well.