Fort Smith Police say one person was arrested outside Northside High School Thursday (2) following an alleged stabbing. Two students were waiting outside at the school when another car drove up, and a Hispanic male jumped out of the car, stabbing one of the students. Police say from what witnesses told police, the incident may be gang related. After the attack, police were able to track down the license plate and arrested 18-year-old Manuel Ortiz of Fort Smith. Ortiz is in custody without bond at the Sebastian County Detention Center…