Police: 15-year-old fatally shot on southbound A train in Queens

Police say a 15-year-old boy was fatally shot on a southbound A train in Queens. 
Police say the victim was shot in the chest in Far Rockaway just before 4 p.m. Friday. 
The MTA says service was suspended in both directions on the A line between Far Rockaway-Mott Avenue and Broad Channel. 
No arrests have been made.