MEMPHIS, Tenn. -- A Horn Lake, Mississippi man was sentenced to 40 years after being convicted for a shooting in a "drug deal gone wrong" last year in Olive Branch. In September, 20-year-old Brandon Brinkley was convicted of attempted first-degree murder, armed robbery, and conspiracy to commit armed robbery after a three-day trial. Brandon Brinkley "I made a promise to protect this community, and this guilty verdict and sentence is just one step toward fulfilling that commitment," said District Attorney Matthew Barton. ORIGINAL STORY: 1 suspect, victim left injured after armed robbery in Olive Branch This case was investigated by the Olive Branch Police Department and prosecuted by Assistant District Attorney Andrew Wilcutt.