An unidentified person has threatened to blow up Bharatiya Kisan Union leader Rakesh Tikait and his family if he does not disassociate himself from farmer protests, police said on Friday. They said Gaurav Tikait, son of Rakesh Tikait's brother and BKU president Naresh Tikait, has filed a complaint that he has received a phone call from an unidentified person who has threatened to target Rakesh Tikait and his family members with a bomb if he does not stay away from farmer agitations.