"Mumbai ke bad ab Dilli ki bari," said the email threatening of bomb blasts in the capital. It was received by the Gurgaon hotel employee on Sunday, police said.
K.K. Sindhu, Gurgaon police commissioner, told IANS that it seemed that "the threat was basically (addressed) to Delhi Chief Minister Sheila Dikshit, Delhi Police commissioner and Delhi hotels, it was only forwarded to the security officer who is currently working in Leela Kempinski here in Ambience Mall".
The chief security officer of the Gurgaon hotel said in his compliant that the employee got the mail from firstname.lastname@example.org.
"We are not taking it lightly and our cyber experts are investigating the seriousness of the threat," Sindhu said.
"We are probing it seriously as it comes close on the heels of the Republic Day celebrations, in fact, we are very close to unearthing the truth," Inspector Suresh Kumar, cyber crime cell chief, told IANS.
The mail, received by the hotel in Gurgaon, said: "Mumbai Ke Bad Ab Dilli Ki Bari, Hotel Leela New Dilli Ka Koi Astitva Nahi Rahne Denge. Gola Barood To Tumhare Yahan Pahunch Chuka hai. Mohmmad Abdul Aaka alias Nilanjan Bhattacharya."
Delhi Police are also investigating the matter.