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 FT LAUDERDALE (CBSMiami) – A man suspected of robbing four Walgreens drug stores in Broward is in custody. 
 
 Over the weekend, Keith Fitzgerald Knowles, Jr. turned himself in to Broward Sheriff’s detectives. 
 
 Knowles reportedly struck first when he hit a Walgreens in the city of Plantation on June 11th, according to the sheriff’s office. 
 
 On June 21st, he struck again, this time at a Walgreens at 3099 N. State Road 7 in Lauderdale Lakes. Security video captured Knowles pick up an item and then walk up to the cashier as if to pay. Once the employee opened the cashier register drawer, Knowles pushed the cashier aside, reached over the counter and quickly grabbed handfuls of cash out of the till, according to the sherff’s office. 
 
 Investigators said Knowles used the same tried-and-true method when he robbed another Walgreens at 3100 N. Andrews Avenue the following day. 
 
 On June 25, Knowles reportedly targeted the Walgreens at 3914 W. Commercial Blvd. in Tamarac. 
 
 Knowles is now facing four counts of robbery, one count of petit theft and a charge for battery on a person over 65. ||||| A Lauderhill man has surrendered after, investigators say, his mother saw surveillance videos and recognized him as the person being sought for a series of strong arm drug store robberies. 
 
 Keith Fitzgerald Knowles Jr., 27, turned himself in to Fort Lauderdale police and was booked into jail Sunday after Broward Sheriff's detectives circulated security camera video from four Walgreens stores that were robbed in June, according to the arrest report filed in the case. 
 
 Knowles had a system, investigators said. 
 
 He would appear to be a customer selecting an item off the shelf and then walk up to the cashier as if to pay. When the clerks opened the cash registers, Knowles would punch or push them aside, reach over the counter and quickly grab handfuls of cash out of the drawers before running out of the store, the videos showed. 
 
 Security cameras recorded Knowles robbing a Walgreens in Plantation on June 11, and a second Walgreens on June 21 at 3099 N. State Road 7 in Lauderdale Lakes. The next day, he robbed a Walgreens at 3100 N. Andrews Ave. in Oakland Park and he capped his crime spree on June 25 by robbing the Walgreens at 3914 W. Commercial Blvd. in Tamarac, detectives said. 
 
 Knowles told investigators that his mother showed him news reports that included surveillance videos of the robberies and he admitted that he was the person in all the videos, detectives said. 
 
 Knowles remained in jail Wednesday with bond set at $45,100 for charges that included robbery, theft and battery on a person over 65, records showed. 
 
 Investigators said they are checking to see if Knowles was involved in two more strong arm robberies last month. 
 
 Staff researcher Barbara Hijek contributed to this report. 
 
 wkroustan@sunsentinel.com or 954-356-4303
– 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.