Agriculture officials have posted a reward for information leading to the arrest and successful prosecution of the person responsible for the arrival of the saltwater crocodile in Yuen Long. If found guilty, the person could face up to two years in jail, senior conservation officer Chan Jee-keung said yesterday. 'If anyone has information that leads to a successful prosecution, they will receive a reward,' Mr Chan said. How much they get depends on the nature of the penalty that is handed down. Trade in saltwater crocodiles is prohibited by the Convention on the International Trade in Endangered Species. Penalties for engaging in the trade in Hong Kong start at $50,000 and six months in jail for non-commercial offences. 'If the person involved is doing it illegally for commercial gain, they face a fine of up to $5 million and two years in prison,' Mr Chan said. The Agriculture, Fisheries and Conservation Department has established a hotline. Anyone with information should telephone 2150 6978. Meanwhile, crocodile expert John Lever called an early halt to his search last night after a second night of not seeing the crocodile. He was planning to return at 2am and search until dawn. 'Finding the croc now seems to be the biggest problem,' Mr Lever said. 'I'm afraid all the activity may have frightened him away,' he said, referring to the crowds and an incident on Friday when the animal was attacked by a dog. Mr Lever was concentrating his latest efforts on an area further down the Shan Pui river, near the outfall of a sewage treatment plant. Crocodiles were known to favour such places as there was a steady supply of fresh water as well as plentiful fish and birds. Mr Lever, who was scheduled to return to Australia after addressing the Foreign Correspondents' Club today, has decided to stay until the weekend in a last-ditch effort to catch the elusive animal. 'I'll stay a few more days,' he said. 'But there's things happening back on the farm that mean I need to be there.' The prospect of Mr Lever departing has again raised the possibility of the authorities bringing in help from the mainland. However, the department's assistant director, Lay Chik-chuen, said no decision had been made. Anyone being considered must go through the same clearances and checks as Mr Lever, he said. 'We have to make sure they have crocodile-handling experience,' Mr Lay said. 'We will be very careful in screening people to come here to work on this situation.'