A new view captured an elderly man beaten down in Southwest Miami-Dade. Surveillance video sent by a viewer showed a person beating up a senior at the Cao Bakery off Coral Way. Police said a string of armed carjackings and robberies across the area sent several people to the hospital. Autho rities identified the person behind them as 33-year-old Alejandro Martinez. Martinez faces multiple charges, including attempted murder, armed robbery, and carjacking. One of the incidents he’s accused of involves a 7-Eleven gas station near Southwest 137th Avenue and 56th Street. Video exclusively obtained by 7News shows a man covered in blood and holding his neck, begging for help just moments after being attacked. He and another victim are expected to be okay. ...read more read less