A reward of more than £60,000 has been offered to catch the killer of a British bride in Antigua.Catherine Mullany died and her husband Benjamin was left in intensive care after a gunman burst into their honeymoon cottage on the Caribbean island and opened fire.A reward for information leading to the conviction of the shooter includes £46,500 from Antigua's hotel and tourism association, and £18,000 from an anonymous businessman.Police hunting the gunman admitted they were no nearer finding the culprit following the shooting on Sunday morning.Police commissioner Gary Nelson said: "We're looking at all young men who have committed violent acts and we're questioning them."This suspect, this person that's committing these terrible crimes - they have to have a girlfriend or boyfriend who knows something, and I call out for them to help us."Police have denied reports that the couple, both aged 31, had been tortured.A British tourist staying at the same resort in Antigua reported hearing screams 20 minutes apart and gunshots, followed by a female voice shouting "Help me please".The tragic couple's parents have flown to Antigua to be with Mr Mullany and to see his wife's body at a funeral home.The couple set off on their two-week honeymoon after marrying at a church in the Swansea valley in South Wales on July 12.They were on the last day of their holiday when at least one gunman burst into their cottage at the Cocos hotel as they slept.