Despite those links , federal investigators have arrived at a ' working model ' of the case that suggests mr. shahzad was the sole plotter inside the u. s.and received no operational assistance or funding from other militants , u. s.officials say .

美国官员说，虽然存在这些联系，但联邦调查员认为作案模式表明哈扎德是美国境内此案唯一的策划实施人，他并未从其他军事组织那里得到执行协助或资金支持。