<p>Mumbai: Reliance Industries Chairman Mukesh Ambani has received a threat email from an unidentified person seeking Rs 400 crore, police said on Tuesday.</p>.<p>Ambani's company received the email on Monday.</p>.<p>It is the third threat email sent to Ambani in four days, an official said.</p>.After threat email seeking Rs 20 crore, Mukesh Ambani receives second email with Rs 200 cr demand.<p>Earlier, an FIR was registered at Gamdevi police station here based on a complaint filed by the industrialist's security in-charge after the first email, seeking Rs 20 crore, was received from an unidentified person on Friday.</p>.<p>On Saturday, the company received another email demanding Rs 200 crore.</p>.<p>The company received the third email on Monday, in which the sender doubled the demand, the official said.</p>.<p>The Mumbai police, their crime branch and cyber teams are working to trace the sender of the email, he added.</p>.<p>Last year, the Mumbai police arrested a man from Bihar's Darbhanga for making death threat calls to Ambani and his family members. The accused had also threatened to blow up the Sir H N Reliance Foundation Hospital in Mumbai. </p>
<p>Mumbai: Reliance Industries Chairman Mukesh Ambani has received a threat email from an unidentified person seeking Rs 400 crore, police said on Tuesday.</p>.<p>Ambani's company received the email on Monday.</p>.<p>It is the third threat email sent to Ambani in four days, an official said.</p>.After threat email seeking Rs 20 crore, Mukesh Ambani receives second email with Rs 200 cr demand.<p>Earlier, an FIR was registered at Gamdevi police station here based on a complaint filed by the industrialist's security in-charge after the first email, seeking Rs 20 crore, was received from an unidentified person on Friday.</p>.<p>On Saturday, the company received another email demanding Rs 200 crore.</p>.<p>The company received the third email on Monday, in which the sender doubled the demand, the official said.</p>.<p>The Mumbai police, their crime branch and cyber teams are working to trace the sender of the email, he added.</p>.<p>Last year, the Mumbai police arrested a man from Bihar's Darbhanga for making death threat calls to Ambani and his family members. The accused had also threatened to blow up the Sir H N Reliance Foundation Hospital in Mumbai. </p>