Mark Memmott

In Orlando, Fla., early Wednesday "an FBI agent was involved in a deadly shooting connected to the Boston Marathon bombing case," NBC News is reporting. A man who was being questioned by the agent is dead. NPR's Dina Temple-Raston and Carrie Johnson have also confirmed the news.

Just how firm the man's alleged connection to the marathon case is, though, remains unclear.

The next mayor of Los Angeles will be City Councilman Eric Garcetti.

In a race in which the two top contenders were both Democrats, the 42-year-old Garcetti has opened a 7- to 8-percentage-point lead over City Controller Wendy Greuel as Tuesday's votes are being counted.

(Most recent update: 8:30 p.m. ET.)

The news Wednesday from Moore, Okla., much of which was destroyed by a massive tornado Monday, begins with word that officials doubt they will find any more survivors or bodies under the hundreds of homes, businesses and other buildings that were leveled.

We don't need to say much. Just watch this video from The Oklahoman of Trenda Purcell's reunion Monday with her 8-year-old son Kamden, who she found safe and sound after the tornado that swept through Moore, Okla.

Facing questions for the first time about why Internal Revenue Service personnel singled out some conservative groups for inappropriate scrutiny while he was head of the agency, former IRS Commissioner Douglas Shulman told Congress on Tuesday that "I was dismayed and I was saddened" to learn about what had happened under his watch.

Both the former IRS commissioner who was in charge when the agency singled out some conservative groups for extra scrutiny and the man who replaced him will be appearing at a Senate Finance Committee hearing Tuesday morning.

Douglas Shulman, an appointee of President George W. Bush who left the IRS last November, and acting commissioner Steven Miller (who is losing his job because of the scandal) are due at the 10 a.m. ET hearing.

(We're following the news from Oklahoma, where a tornado devastated the Oklahoma City suburb of Moore on Monday. Most recent update: 8:40 p.m. ET.)

A day after a monster EF-5 tornado pummeled Moore, Okla., the focus turned to the victims.

NPR's Wade Goodwyn spent the day in the city talking to survivors. Christie Parrish decided to leave her home for her sister's shelter.

The Internal Revenue Service is under fire for improperly singling out some conservative groups for extra scrutiny — putting them through months (or longer) of questions that delayed or derailed the organizations' requests for tax-exempt status.

Well, now the chairman and ranking Republican on the Senate Finance Committee have some questions and requests — actually dozens of them — for the IRS.

ABC News White House correspondent Jonathan Karl now says he regrets that some key parts of a major story he reported on May 10 were wrong.