SAN ANTONIO - Police have arrested a suspect in the road rage shooting death of a 23 year old man. Ruben Martinez, 18, is behind bars charged with murder. According to the police report, on December 13 Martinez and the victim, Frankie Rodriguez, got into a yelling match while driving along I-37 near Fair Avenue. Police say two different cars then boxed Rodriguez in, forcing him to slow down. The suspect pulled up beside him and open fire, hitting Rodriguez in the chest. He was later taken to SAMC where he died.