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Our colleague Andy Carvin has scanned Twitter in search of reaction, including photos and video, from the massive tornado that swept through central Oklahoma on Monday.

Among the tweets:

Sidney Montoya of Oklahoma City says he is "Praying for my little cousins in Moore, their elementary school just got hit by the tornado."

NBC News has put together a time-lapse video of the EF-4 tornado that tore through the southern suburbs of Oklahoma City, Okla.

As we told you in the live blog, the National Weather Service says it was at least an EF-4 tornado with winds in excess of 166 mph. The tornado stayed on the ground for 40 minutes and traveled 20 miles.

It's another bad day for the Justice Department.

A federal judge in Louisiana has thrown out the central criminal charge against a former BP executive because prosecutors failed to prove he knew about a pending congressional investigation into oil flowing into the Gulf of Mexico three years ago. U.S. District Judge Kurt Engelhardt also ruled that a Democratic House member who inquired about the oil flow rate was acting as head of a subcommittee, not a full congressional committee, as required under the federal Obstruction of Justice statute.

Damaging tornadoes ripped through Oklahoma on Sunday and Monday, causing widespread damage that is still being assessed, and additional severe weather is expected.

Ray Manzarek, the keyboardist and a founding member of The Doors, died Monday in Germany. He was 74.

A statement from publicist Heidi Ellen Robinson-Fitzgerald said Manzarek died in Rosenheim, Germany, after a long battle with bile duct cancer.

Manzarek and Jim Morrison founded the iconic band after meeting in California. The Doors went on to become one of the most successful rock 'n' roll acts of the 1960s — and continues to have an impact decades after Morrison's death in 1971.

Melissa Block talks to Joe Wertz of the public radio initiative State Impact about the tornado that hit the Oklahoma City area on Monday.

Transcript

MELISSA BLOCK, HOST:

From NPR News, it's ALL THINGS CONSIDERED. I'm Melissa Block.

ROBERT SIEGEL, HOST:

I'm Robert Siegel. Some big numbers are being thrown around in Silicon Valley today. This morning, Yahoo CEO Marissa Mayer announced that Yahoo is buying Tumblr, a social media and blogging startup. The price, $1.1 billion and that for a site which last year earned a tiny fraction of that amount in revenue.