Boston Marathon Bombing Update: 3 Dead, at Least 145 Injured

As investigations surrounding the Boston Marathon bombing continue, ABC News has confirmed that three people were killed, at least 145 people were injured and 17 of those are in critical condition. One of those killed was an 8-year-old boy. Authorities are now looking to determine who set off two bombs at Boylston Street yesterday afternoon.

Firefighters and law enforcement are continuing to investigate the crime scene, which encompasses a 12-block radius. Chief Ron Harrington of the Boston Fire Department told NBC News, “In 28 years, this is definitely the worst I’ve seen. Bodies and body parts. Blood all over. A little boy lying in the street. A young woman in her 20s. Both dead,” he continued, “It was mayhem. I saw two people with arms hanging loose, and one without a leg. A shoe with flesh still in it.”

After the tragic bombing, Twitter users fueled a debate over a mystery man who was seen walking on a rooftop close to the finish line after the bombings occurred. Taken by Dan Lampariello, the cryptic photo was retweeted over 2,000 times and made “Boston Marathon roof” a trending topic on the social media site.

Since phone service was shut down to prevent further violence, people were using smartphones to text and receive updates. During this time, Google launched Google Person Finder, which allowed people to locate their loved ones. The service updates the user on the status of runners who participated in the marathon. For example, if one types a name, a message will show up stating, “Status: Someone has received information that this person is alive.”

U.S. Attorney, Carmen Ortiz, stated in an on-air press conference on NBC this morning, “What happened yesterday was a terrible tragedy. It’s amazing to see how people helped one another,” she said, “There are so many moving parts to an investigation such as this. We are doing all that we can and using all of our resources to help Boston recover.”

“We will find out who did this and we will hold them accountable,” said President Barack Obama.