Baltimore City Schools Police arrested a teenager Friday morning in connection with a double shooting earlier in the month.City police said school police officers arrested a 15-year-old boy around 9:10 a.m. Friday in the 1400 block of Orleans Street.The boy remains held at Central Booking on attempted first-degree murder and gun charges, police said.City police said investigators believe the boy shot a 21-year-old man and a 19-year-old man on March 2 in the 500 block of Dolphin Street.Anyone with information is asked to call police at 410-396-2411 or Metro Crime Stoppers at 866-7LOCKUP.