Breaking from the Washington Post:
The failed car bombing attempt in Times Square increasingly appears to have been coordinated by several people in a plot with international links, Obama administration officials said Tuesday.
White House officials also characterized the incident as attempted terrorism for the first time, dramatically stepping up their description of the intended attack.
“I would say that was intended to terrorize, and I would say that whomever did that would be categorized as a terrorist,” said press secretary Robert Gibbs.
UPDATE: More here.