Terror suspects, David Headley and Tahawwur Hussain Rana and the perpetrators of the Mumbai attack had the same handlers in Pakistan. This is yet another pointer to links the between the duo and the Mumbai attack. <br/>Investigators have indicated that Headley and Rana were part of a larger conspiracy behind 26/11. According to government source, evidence shows that Headley and Rana were in touch with the same people who were giving directions to Kasab, the lone surviving terrorist in Mumbai attack and other terrorists.<br/>Investigating agencies have asked the FBI, which arrested the two for plotting terror attack in the US for the voice sample of Headley and Rana so that it could be compared with the samples available in India.<br/>Sources also said filmmaker Mahesh Bhatt's son Rahul was not a terror suspect but efforts were on to ascertain if he had unwittingly helped Headley. Headley and Rana were in Pakistan during the 26/11 and left Pakistan soon after the terror attack.<br/>Meanwhile, The National Investigation Agency, NIA, is scrutinising the documents and other details collected by the Mumbai crime branch during its local probe on the Mumbai links of Headley. Headley who had come on a business visa to India, ran an immigration business in Mumbai. The NIA officials are likely to question Kasab in this connection.<br/>In the capital, the Delhi police have identified two cyber cafes visited by Headley during his three day stay in Delhi this year. More than 20 teams of NIA are probing Headley-Rana trail in India. The duo had visited India between 2006-2009.