. >> hallie jackson is live with the latest. >> boston police confirmed they are talking with someone but would not say whether that person was a suspect. officially confirmed the connection between the boston marathon bombing and a home search. the entire country is wake me up to more questions than answers. why did this happen? at least three people are dead. 140 hurt. the carnage looks like what you'd expect from a war. there was blood and body parts scattered in the streets. the bombs exploded about four hours into the race. listen to what happened to one runner. >> i get down near the finishing apron. there was a tremendous explosion. .t just hit my whole body i knew i was going down. course,e end of the officials found two more unexploded bomb. >> what are we learning about the victims? >> one is a little boy. two other people are dead. more than 140 injured. they were transported to local hospitals almost immediately. some say this is something they have not seen in their lives. this is one of the oldest and most prestigious marathons. this is the worst attack on u.s. soil afte

hallie jackson has the latest. >> hi. the proposal to expand background checks is winning the support of some gun rights groups but not the nra. >> hi. as you probably noticed, i'm not the president. >> she is the mother of a boy killed at sandy hook elementary school. the first time -- before us do something our tragedy becomes your tragedy. >> questions remain over how much support a bill to extend background checks will get. >> you cannot get anything done because you need 60 votes without bipartisan support. >> only three republicans are expected to vote on the compromise, clothing susan collins and pat twoomey. >> we can make it more difficult for them to get a gun. >> i cannot support it. >> john mccain believes more should be done but the senate bill is a good start. creditve to give them and nine favorably disposed. >> gabrielle giffords is expected to be on capitol hill this week to lobby for more gun control. certainbout a ban on assault-style weapons? >> there will be a roll call vote this week. it is not expec

officials believe this was some kind of coordinated attacks. >> hallie jackson, thank you. officials in baltimore are increasing awareness. >> kim dacey is live outside camden yards. security/noticed more >> that is what police are telling us. there will be extra security for the game tonight. extra might notice security on public transportation. >> there are no credible threats at this time to the city of baltimore. but it is prudent to take cautious steps. >> he elevated the security awareness level in the city. that means you'll notice more people in uniform. >> we will see, as the squad officers in full gear will be in swat gear with automatic weapons. they will be working closely with the mta police. they will check suspicious activity. they will check the trash cans and perimeters. you'll see the bomb dogs. we're checking all the buildings and railways and the lines. , letting uscall know. let us know about strange parked cars or bags. let us know. >> local police departments and state police are working together. experts say some security measures will be obvious, bu

hallie jackson is live with the big stories out of d.c. lawmakers are expected to vote on a proposal to expand background checks as soon as this week. it is winning some support from gun rights groups but not the nra. >> hi. as you probably noticed, i'm not the president. >> she is the mother of a boy killed at sandy hook elementary school. she delivered an emotional address. >> help us do something before our tragedy becomes your tragedy. >> questions remain over how much support a bill to extend background checks will get. >> you cannot get anything because yousenate need 60 votes without bipartisan support. >> only three republicans are expected to vote on the compromise, including susan collins and pat toomey. bill.cosponsoring the >> we can make it more difficult for them to get a gun. >> i cannot support it. >> john mccain believes more should be done, but the senate bill is a good start. >> i have to give them credit and i am favorably disposed. >> gabrielle giffords is expected to be on capitol hill this week to lobby for more gun