The blaze began at about 7:25 a.m. on the track near 145th Street and St. Nicholas Avenue in Harlem, causing smoke to travel down the tunnel to 135th Street, according to FDNY officials. The fire was ongoing as of 9:00 a.m. with firefighters on the scene, and has been brought under control by 9:30 a.m. 11 were taken to local hospitals. The authority urged people to remain on their trains, apparently a precaution after a recent A train derailment in Harlem that prompted some riders to self-evacuate.For service to/from the Bronx customers are advised to use 125 St cross town bus to 125 St and Lexington Av, then transfer for the northbound train service making nearby station stops.Subway service was completely halted in both directions on the entire B and C lines, while A and D trains were not running in Upper Manhattan.The MTA says all passengers that were stuck between stations were able to get off their trains and go to subway stations.There is no A Subway train service between 125 St and Inwood-207 St in both directions. There is no C train service between Euclid Avenue and 168th Street in both directions.The 1, 2, and 4 lines will provide alternate service, along with the Bx12, Bx19, and free shuttle buses. Check back for the latest status here.Riders should check the MTA’s website for service updates.