Heightened Subway Security in Response to Unsubstantiated Terror Threat

The NYPD has confirmed that it is increasing security measures around the city in response to an unsubstantiated report of a planned terrorist plot against the New York City subway system.

The MTA released the following official statement: "The MTA is aware of an unsubstantiated report of terrorist threats against transit properties during the holiday season. We are already on high alert and are always on a heightened state of readiness during this season. We have been working closely with local, state and federal law enforcement to increase police presence throughout our transportation system. As always, we ask that our customers remain alert and report any suspicious activity or packages, but there is no reason to be alarmed."

This morning, The Associated Press reported that the FBI received a "plausible but unsubstantiated" report that al-Qaida terrorists in late September may have discussed attacking the subway system. The AP also reported that anti-terror agencies say they have no specific details to confirm the plot had moved beyond "aspirational planning."

This news comes on the busiest travel day of the year as New Yorkers head off to family gatherings by plane, train, and automobile. You can expect that the heightened security may cause some delays.

Learn more about Gridlock Alert and check NYC-area traffic advisories.

Get the latest details on the subway terror threat from NY1