调查组正在接到的400个公众电话中追踪可能的线索。
The inquiry team is also following up possible leads after receiving 400 calls from the public.
在演出结束三个月后，研究小组进行了电话追踪调查，以评估人们预防药物滥用的情况。
A follow-up telephone survey was then carried out three months after the play was shown, to assess people's participation in preventing drug abuse.
报道称，在美国联邦调查局特工追踪到她后，伍尔福克承认这个电话是骗局，她最近遇到了婚姻问题。
After FBI agents tracked her down, Woolfolk admitted the call was a hoax and that she had recently had marital difficulties, the LA Times reported.
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