Patna, Sept. 2 -- Union minister Chirag Paswan said he received a death threat in an anonymous letter which said that he will be "killed shortly by hardcore terrorists". Paswan's additional private secretary wrote to the home secretary to bring his attention to "matter of grave concern" regarding "personal security" of the union minister for food processing industries. Paswan is currently protected by a nationwide Z-category security cover. According to the letter, Paswan's ministry received "unsigned communication" which contained two mobile numbers on Tuesday and carried a "direct threat" to the minister's life. "The threatening portion of the communication, excluding the mobile numbers mentioned therein, reads: "You will be killed shortly by hardcore terrorists."" the letter read. "The contents of the communication, particularly the direct nature of the threat and the reference to "hardcore terrorists", are a matter of grave concern and give rise to serious apprehensions regarding the safety and security of the Hon'ble Minister. The original communication is enclosed for kind perusal," it added. Paswan's office requested urgent and prior attention to the matter and a probe into who sent the threat and how authentic it is. "In view of the above, I am directed to request that the matter may kindly be taken up on an urgent basis and a thorough investigation into the origin, authenticity and circumstances of the threatening communication may be initiated without delay. It is further requested that the security arrangements of the Hon'ble Minister may be reviewed and suitably augmented," letter said....