A phone call from an unidentified man, threatening to blow up the Ram Janmabhoomi complex was received by an Ayodhya resident, police said on Thursday. The call was received by Manoj, who lives in the Ramkot area of this Uttar Pradesh district. He alerted police about the call received on his mobile phone. According to police, the caller threatened to blow up the temple area at 10 am on Thursday. As soon as the information was received, police issued an alert to all personnel deployed at various locations in the district.