National News

Authorities say that five to 15 people may have died in last night's massive explosion at the West Fertilizer Plant in West, Texas. Many more, perhaps more than 160, were injured.

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Wednesday night marked the first major sporting event in Boston since Monday's bombings of the Boston Marathon. Prior to the Boston Bruins' game against the Buffalo Sabres at TD Bank Garden, the Bruins observed a moment of silence for the victims and survivors of the bombings

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An explosion in West, TX, just outside of Waco, spread fires across multiple buildings and injured an unknown number of people earlier tonight.

The explosion occurred at the West Fertilizer Plant shortly before 8 PM CT

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2:45 p.m. (EST): The Boston Police Department has announced that "there has not been an arrest in the Marathon attack." Investigations are ongoing.

2:35 p.m.: CNN is retracting their previous report that an arrest has been made in the Boston Marathon bombings. Other sources are reporting that officials are close to identifying a suspect after reviewing area surveillance video, but no arrests have been made.

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1:10 p.m. (EST): A third letter, this one sent to Senator Joe Manchin (D.-W.V.), has been found to contain ricin.

12:45 p.m. (EST): FBI spokesman Paul Bresson has confirmed that the substance found in the letter to the president was ricin.

The Secret Service says that a letter containing a suspicious substance and addressed to President Obama was received on Tuesday at a White House mail facility. This comes just after a letter sent to Senator Roger Wicker (R.-Miss.) was found to contain the poison ricin.

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The U.S. Secret Service has intercepted a letter addressed to President Barack Obama that contained a "suspicious substance."

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Authorities investigating the deadly bombings at the Boston Marathon have recovered a piece of circuit board that they believe was part of one of the explosive devices, and also found the lid of a pressure cooker that apparently was catapulted onto the roof of a nearby building, an official said Wednesday.

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The two bombs that ripped through the crowds at the Boston Marathon, killing three people and wounding more than 170, were fashioned out of pressure cookers and packed with shards of metal, nails and ball bearings.

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A heart-wrenching photo of 8-year-old Martin Richard, who was killed in the Boston Marathon bombing on Monday, shows the boy holding a hand-drawn sign that says, "No more hurting people. Peace."

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As a parent, the hardest part of coping with any tragedy—be it a national or personal one—is finding the words to explain the unexplainable to your children, society's most innocent members.

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