An explosion near the Port Authority Bus Terminal in Manhattan shut down one of the busiest transit hubs in North America during the Monday morning rush, disrupting the routines of tens of thousands of commuters.

The Metropolitan Transportation Authority closed the busy subway station beneath the terminal, at 42nd Street and Eighth Avenue and diverted passengers on several lines. Shortly after 7:30 a.m., the transit authority said trains would bypass the 42nd Street stops on the 1,2,3, A, C, E, N, Q, R and W lines.

The No. 7 line, which runs along 42nd Street, also was affected. The L line, which runs along 14th Street, was not operating west of the Sixth Avenue station.