Early Friday morning in Roslindale, a Boston neighborhood, a routine traffic stop escalated into something more serious when police arrested a man after discovering a firearm and ammunition in his vehicle. According to Boston Police Department, officers attached to District B-3 (Mattapan) were patrolling Shandon Road around 1:15 AM when they noticed an SUV idling. After a check revealed the SUV’s expired registration, the officers pulled over the vehicle at 485 American Legion Highway.