Two floors were evacuated at the Viacom headquarters in Times Square late Wednesday afternoon, after an electrical problem caused the floors to fill with smoke.
Firefighters were sent to Penn Station late Wednesday afternoon, after smoke filled an electrical room.
The MTA says A and C train service in Upper Manhattan has resumed with residual delays after an earlier disruption due to a smoke condition that apparently began in a transformer.
There were some scary moments aboard a No. 7 train when a fire broke out on the tracks. The incident occurred Monday night on a Queens-bound train near Grand Central Terminal.
The LIRR said customers should expect canceled trains and delays during the evening rush hour.