BROOKLYN -  Investigators have released surveillance video of a man suspected in a string of Brooklyn armed robberies. 

Authorities say the suspect is behind at least eight holdups, all within the confines of the 67th Precinct. The crimes date back to Feb. 15, with the last one happening this past Friday. 

According to detectives, the man either walks up to victims as they're walking into their homes, or he forces his way into the homes and confronts victims there. Each time he had a gun and demanded property. 

The suspect is a black man believed to be between 20 and 30 years old. Anyone with information that could help should call Crime Stoppers at 1-800-577-TIPS