NYC ‘Credible’ Terror Threat involves possible dirty bomb

Authorities are concerned about a Times Square strike as well as tunnels and bridges.

CBS  Federal and local authorities have beefed up security after receiving intelligence about a credible threat. The alleged plot by al Qaeda involves detonating car bombs on bridges and in tunnels in New York and Washington D.C. to coincide with the anniversary of 9/11.

Security was equally tight at Penn Station, where armed guards were keeping watch over travelers as Transportation Security Administration agents performed random bag checks, swiping packs for gunpowder.

The crossroads of the world came to a grinding halt at various times Friday because for police Times Square has become the ground zero of the latest terror threat.

Some of the information on the latest threat could be coming from Younis al-Mauritani, the man hand-picked by Osama bin Laden to develop terror targets in the United States. He’s a “most wanted list” senior al Qaeda operative who was arrested in Pakistan last week with his computer, BlackBerry and other tools.

The intelligence includes information that al Qaeda wants to finish the job that started with Faisal Shahzad’s failed car bomb attempt in May 2010.

Intelligence sources said the terrorists could be trying to make a dirty bomb this time my mixing radiological isotopes with an explosive device. That’s why the NYPD is deploying all kinds of radiation detectors, panel trucks with sophisticated instruments.