WASHINGTON (POLITICO) - Homeland Security Secretary Janet Napolitano said Tuesday that there is no sign the explosions in Boston were part of a "broader plot," but that her department is still being cautious.
"While there is no current indication to suggest that the events in Boston are indicative of a broader plot," she said in a written statement.
"Out of an abundance of caution," she added, "DHS continues to keep in place enhanced security measures at transportation hubs, utilizing measures both seen and unseen."
Earlier Tuesday, Napolitano was among the senior administration officials who briefed President Obama on the response to the incident.
Click here for more on this story from POLITICO.