Shimla, Jan. 22 -- An email threatening a suicide bomb attack targeting Himachal Pradesh chief minister Sukhvinder Singh Sukhu at the state Republic Day function was received here after which a case has been registered, police said on Wednesday. The email, received by the office of deputy commissioner of Shimla, claimed that a human bomb will eliminate the CM if he unfurls the national flag during the Republic Day function on The Ridge in Shimla, they said. "A mail was received and we have forwarded the same to police for further action," said DC Anupam Kashyap while talking to HT. The police said a case has been registered and they are trying to ascertain the identity of the sender. They said strict vigil is being maintained to ensure CM's and people's safety. htc...