A local court in Uttar Pradesh's Mathura today ordered the survey of the Shahi Idgah Mosque, said to be built on the "Krishna Janmabhoomi", or the birthplace of Lord Krishna, by the Archaeological Survey of India after January 2. The report will be submitted after January 20. The court passed the order on a lawsuit filed by Vishnu Gupta of the right wing outfit Hindu Sena, which said the survey will be similar to the one in Varanasi's Gyanvapi mosque, where a "Shivling" was said to be found during a survey.