During the Boston Police Commisoners press conference, two numbers were given out. The first one is to help you find your loved ones.
If you need to find your loved ones:
If you have information that leads to suspects in this case:
The police commissioner, Ed Davis wants to know any tips people have, what they heard or saw at the finish line.
Please also make use of the Red Cross Wesbite where you will be able to register yourself as safe. The website should also help you locate your loved ones and family members.
The NYTimes has mapped where the marathon explosions occurred: