A wedding ended in a tragedy as a groom was killed in celebratory firing as the marriage procession arrived at a guest house in Sitapur, police said on Thursday. 28-year-old Amit Rastogi was hit by a bullet late last night. The incident happened when the marriage procession reached the guest house in Prem Nagar and some persons from the groom's side started firing in the air from their pistols. One of the bullets hit Amit on his head and he fell unconscious, police said. He was referred to a trauma centre at Lucknow where he was declared brought dead, it said.