<p>A bomb threat received by the Rajiv Gandhi International (RGIA) Airport here by e-mail turned out to be a hoax, police said on Tuesday.</p>.<p>The airport's customer care section received the mail on Monday about the bomb threat and a thorough check was conducted by security personnel and no explosive or suspicious item was found and the threat turned out to be a hoax, they said.</p>.Restaurant employee shot dead in Hyderabad.<p>Later, another message was received from a person, apologising for the previous one, saying his son was 'mentally unsound' and that he had sent that message.</p>.<p>"We are verifying both the messages," a police official said.</p>.<p>A case was registered at RGI Airport police station and further investigations were on.</p>
<p>A bomb threat received by the Rajiv Gandhi International (RGIA) Airport here by e-mail turned out to be a hoax, police said on Tuesday.</p>.<p>The airport's customer care section received the mail on Monday about the bomb threat and a thorough check was conducted by security personnel and no explosive or suspicious item was found and the threat turned out to be a hoax, they said.</p>.Restaurant employee shot dead in Hyderabad.<p>Later, another message was received from a person, apologising for the previous one, saying his son was 'mentally unsound' and that he had sent that message.</p>.<p>"We are verifying both the messages," a police official said.</p>.<p>A case was registered at RGI Airport police station and further investigations were on.</p>