Timothy Alben of Massachussetts state police said he believed the suspect is still in the state.

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"Our immediate concern is for those people in that neighborhood up there, " Mr. Alben said.

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Alben, the state police spokesman, says the suspect fled on foot and that authorities still believe he's in Massachusetts.

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Alben of the Massachusetts State Police said shortly after noon.

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Massachusetts State Police will run additional patrols through Watertown to help police in that city, for at least the next few days or until Dzhokhar Tsarnaev is caught or killed, said Alben.

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Alben revealed that Tsarnaev was still at large.

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Alben said he believed Tsarnaev was still hiding somewhere in the Boston area, and indicated that while the police would maintain a strong presence in the area, Watertown was no longer the focus of the investigation.

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Alben, Superintendent of the Massachusetts State Police.

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Ryan is one of many Delta Tau Delta alumni who have entered politics, and the second vice presidential candidate to emerge from the fraternity nationally: Alben Barkley, a longtime senator from Kentucky, was vice president during Harry Truman's second term.

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