Brownsville Police Detectives are currently investigating a series of 9 Aggravated Robberies that have taken place since April of this year throughout the city. Unknown male subject walks into loan companies with a black handgun and robs the employees of all available cash. Crime Stoppers and Brownsville PD is offering a $4000 dollar reward for any information that leads to the arrest of this subject. He is considered armed and dangerous. Anyone with information is asked to call the Brownsville Crime Stoppers hotline at (956)546-TIPS(8477). All calls remain anonymous!!!