MUMBAI, Oct. 10 -- The 33-year-old labourer arrested at Chhatrapati Shivaji Maharaj International Airport (CSMIA) for allegedly threatening NCP leader Zeeshan Siddique had also issued extortion threats to Indian cricketer Rinku Singh in the name of fugitive gangster Dawood Ibrahim, police officers said on Thursday. The accused, identified as Mohammad Dilshad Mohammad Naushad, a Bihar native who worked as a daily wage labourer in Trinidad and Tobago, was detained by the Anti-Extortion Cell (AEC) of the Mumbai Crime Branch on August 1, soon after he landed in Mumbai from the Caribbean. A lookout circular had been issued against him in May. According to police, Naushad had sent multiple emails to Zeeshan Siddique in April, demanding Rs.10 crore and claiming to be associated with Dawood Ibrahim's D-Company. In these messages, he referred to the murder of Zeeshan's father, former MLA Baba Siddique, asserting that D-Company - and not the Lawrence Bishnoi gang - was behind the killing. The investigation further revealed that Naushad had also sent extortion messages to cricketer Rinku Singh through an email account linked to the batsman's brand campaign. In his first message on February 5, Naushad requested financial help, but later on April 9, he demanded Rs.5 crore, again invoking the name of Dawood's gang. On April 20, he sent a reminder email reiterating the threat....