PITTSBURGH — A 16-year-old boy has been charged with shooting another teen at a transit stop, the latest of several violent incidents involving younger people in downtown Pittsburgh.

Mayor Bill Peduto has ordered more police patrols downtown and promises to work with public school and federal law enforcement officials to curtail youth violence.

Tuesday’s shooting happened about 4:10 p.m. at a busy station serving passengers of buses and light-rail trains. Police haven’t named the suspect or his 17-year-old victim, who is said to be in stable condition.

The shooting comes on the heels of a shooting following the city’s Fourth of July fireworks show and a fight involving two groups of youths during the Three Rivers Regatta last month.

Police say Tuesday’s suspect used a .22-caliber pistol later found in his school book bag.