President Obama put out this written statement Monday evening on the DC metro crash that has killed at least four and injured dozens of others:

"Michelle and I were saddened by the terrible accident in Northeast Washington D.C. today. Our thoughts and prayers go out to the families and friends affected by this tragedy. I want to thank the brave first responders who arrived immediately to save lives. My staff has been in touch with Mayor Fenty's office and will continue to monitor the situation."