In significant move, the CBI has decided to conduct lie detector tests of the accused arrested in connection with the killing of a minor girl in Kotkhai Tehsil of Shimla in Himachal Pradesh. The CBI has moved an application in this regard with the competent authority and after getting due permission, the test will be conducted, informed the sources. A 16 year old girl was gang raped and murdered on July 4 and later her body was found in nearby forest area on July 6 in forest area of Kotkhai. Total six persons were so far arrested in the case and one was murdered inside the jail. Yesterday the Himachal High Court has directed the CBI to complete its investigation within two weeks.