A BART Officer and SFPD Officers responded to the station regarding a fight involving multiple subjects. Further investigation revealed the battery occurred between two subjects who know each other with the primary aggressor having left the station. The suspect was described as a Hispanic male, 25 years old, all black clothing, 5’10”, 195 lbs. The victim refused to pursue a criminal complaint. He suffered a bloody nose, was treated at the scene by Fire/paramedics and released. As a result of SFPD’s area search outside the station, they arrested a suspect for resisting arrest/drunk in public and took the case.