Updated: 7:49 AM Budget cuts from Congress will soon reduce the number of free exhibitions on view each day at the Smithsonian Institution in Washington.

Updated: 7:50 AM The FBI has served a search warrant on a home in suburban Boston in the investigation into the Boston Marathon bombing attack. Massachusetts State Police confirm that a search warrant related to the investigation was served Monday night in Revere, but they haven't said anything else.

Posted: 5:48 AM The Pakistani Taliban have denied any role in the bombings at the Boston Marathon that killed at least three people and injured more than 140.

Updated: 8:02 AM The Senate continues debate today on a wide-ranging gun control bill and an amendment that proposes background checks for gun purchases online and at gun shows.

Posted: 5:46 AM The U.S. immigration system would undergo dramatic changes under a bipartisan Senate bill about to be unveiled. It puts a new focus on prospective immigrants' merit and employment potential, while seeking to end illegal immigration once and for all by creating legal avenues for workers to come here.

Updated: 7:50 AM The U.S. and South Korea are watching for signs of whether North Korea will conduct a medium-range missile test in defiance of international concerns.

Posted: 5:43 AM China's military says the U.S. is destabilizing the Asia-Pacific region by sending more forces to the area and boosting its alliances with regional partners.

Updated: 8:01 AM The U.S. Geological Survey says several earthquakes have shaken central Oklahoma.

Posted: 5:06 AM A Cleveland-area man accused of overbilling Medicaid and Medicare by more than $2.5 million has pleaded guilty to conspiracy to commit health care fraud and four counts of health care fraud.

Posted: 11:46 PM An FBI spokesman agents have locked down the Knoxville headquarters of Pilot Flying J, the truck stop business owned by the family of Tennessee Gov. Bill Haslam and his brother, Cleveland Browns owner Jimmy Haslam as part of an ongoing investigation.

Posted: 11:44 PM Your daily look at late-breaking news, upcoming events and the stories that will be talked about Tuesday.

Posted: 11:40 PM Two bombs exploded in the crowded streets near the finish line of the Boston Marathon on Monday, killing at least three people and injuring more than 140 in a bloody scene of shattered glass and severed limbs that raised alarms that terrorists might have struck again in the U.S.

Updated: 8:04 AM A person familiar with the situation tells The Associated Press that an 8-year-old-boy has been killed in the explosions near the finish line of the Boston Marathon.

Updated: 7:13 PM President Barack Obama, responding to the explosions at the Boston Marathon, says the United States does not know "who did this or why" but vowed that whoever is responsible "will feel the full weight of justice."

Updated: 8:32 PM Boston police say no suspect has been taken into custody in connection with the explosions near the finish line of the Boston Marathon.

Posted: 6:06 PM Google is stepping in to help family and friends of Boston Marathon runners find their loved ones after explosions near the finish line.

Updated: 8:35 PM President Barack Obama will issue a statement on the explosions at the Boston Marathon in televised remarks to the nation from the White House at 6:10 PM.

Posted: 5:47 PM Cellphone companies say service is operating in the Boston area, but with heavy traffic following of the explosions at the Boston Marathon.

Updated: 8:36 PM Attorney General Eric Holder has directed the full resources of the Justice Department be deployed to investigate the bombs that exploded at the Boston Marathon.

Posted: 5:30 PM The Red Cross has created a central website to allow people in disaster areas in the United States to register their current status, and for people concerned about their loved ones to access that information.

Updated: 6:52 PM Boston police say there's been a third explosion in the city, following two blasts near the finish line of the Boston Marathon that killed two people and injured many others.

Updated: 8:34 PM The Federal Aviation Administration is warning pilots that it has created a no-fly zone over the site of two explosions at the annual Boston marathon.

Updated: 8:37 PM One runner says he saw at least two dozen people with very serious injuries at the finish line of the Boston Marathon, after the twin explosions there. The runner, a Rhode Island state trooper, says the injuries included missing limbs.

Updated: 8:38 PM British police say they are reviewing security plans for Sunday's London Marathon, the next major international marathon, because of the explosions that hit the race in Boston.

Updated: 8:37 PM Police are stepping up security at hotels and other prominent locations following explosions at the Boston Marathon.