NEW DELHI: BJP spokesperson Shahnawaz Hussain was allegedly threatened over phone last night following which he has registered an FIR at the Parliament Street police station here.In his complaint, Hussain said he received two calls from a Dubai number when he was on his way to his residence in Delhi from the airport around 11:30 pm after he had returned from Patna. The caller abused him for batting for the Narendra Modi government on television debates and asked him to leave the party or else face repercussions, and that even Prime Minister Narendra Modi would not be able to save him."We have registered a case under relevant sections and investigations have been taken up," said a senior police official.