Boston Police Commissioner Edward Davis speaks about the explosions during...

Boston Police Commissioner Edward Davis speaks about the explosions during a press conference. Two explosions disrupted the Boston Marathon on Monday, causing at least two deaths and dozens of injuries and scattering crowds near the finish line, authorities said. (April 15, 2013) Credit: AP

Boston's police commissioner says the lone surviving suspect in the Boston Marathon bombing is in serious condition and authorities have not been able to try to interrogate him.

Commissioner Edward Davis also tells CBS' "Face the Nation" that the crime scene from the early Friday firefight in Watertown, Mass., was "littered" with unexploded improvised explosive devices.

Tamerlan died in the gunbattle with police in Watertown.

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Future of Kings Park Psychiatric Center? ... Weekend weather forecast ... FeedMe: Veggie dishes in Bethpage Credit: Newsday

Ex-doc hasn't paid dime of sex abuse settlement ... Former parks chief sues ... Giants/Saints preview ... Weekend weather forecast

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