Pakistani police have arrested at least two people in Karachi, Pakistan. One of them, Tauseef Ahmed, is believed to have traveled to the U.S. two months ago to meet with Faisal Shahzad. CBS News has also learned that Shahzad may have spent at least four months training at a terrorist camp - raided in early March by Pakistani forces. The camp is affiliated with Pakistan's Taliban, the group that claimed responsibility for the botched attack in Times Square. Its leader Hakimullah Mehsud threatened, "The time is very near when our fighters ....will attack the American states." Prior to the release...