NEWARK - A corridor at Newark Penn Station was briefly closed off while police investigated a suspicious bag that was found. This discovery is in the wake of the Boston Marathon bombings, which has New Jersey authorities have stepped up security at mass transit hubs throughout the state.

Although there is no known threat to New Jersey, state police have recalled and pre-deployed the bomb unit, aviation crews and tactical teams, as well as search and rescue teams.

NJ homeland security and state police are keeping Gov. Chris Christie and partner agencies updated, including the FBI's Joint Terrorism Task Force, the Port Authority of NY/NJ and New Jersey Transit. They are also communicating with private sector partners such as large businesses, hotels and critical infrastructure, including power plants and chemical plants.

Hoboken police say they have also increased patrols at the Hoboken Train Terminal, Hoboken Ferry Terminal, Hudson-Bergen Light Rail facilities and public buildings.

Weehawken police say they are keeping an eye on the NY Waterway ferry facilities.