Stronger measures were needed to deter mainland illegal immigrants from entering Hong Kong to commit crime, two District Court judges said yesterday. Judges Esther Toh Lye-ping and Chua Fi-lan made their calls while passing sentence on illegal immigrants in two separate trials. Judge Toh said the sentences available to the courts were not sufficiently heavy and the Government should consider what further steps were necessary. Judge Chua expressed concern that illegal immigrants might keep the profits of their crimes, even when caught. Judge Toh made her comments before jailing Lau Kwan, 24, for four years and six months for burglary. 'It seems sentences in Hong Kong are not sufficient to deter the defendant from committing crimes here,' Judge Toh said. 'Perhaps it is time for the executive to consider what deterrent steps are necessary to stop illegal immigrants coming to Hong Kong to commit crime.' Lau admitted breaking into a house in Tuen Mun and beating up three of the occupants on April 26 this year. Judge Toh dismissed Lau's claim that he raided the house because he was hungry. She said Lau, who made $800 a month at an advertising company in Shenzhen, came to Hong Kong looking for easy money. In the other case, Judge Chua called on the Department of Justice to ensure illegal immigrants could not keep unclaimed cash and valuables in their possession after they committed crimes. She jailed factory worker On Ting-wo for 34 months after he admitted a May 30 burglary and to illegally remaining in Hong Kong. Judge Chua said the prosecution should bring to the attention of the courts any unclaimed property found on illegal immigrants before classifying it as the prisoners'. The judge said that unless a confiscation order was made for such property, illegal immigrants would have enjoyed a 'profitable adventure' in the SAR. She called on the Department of Justice to take this into account when laying charges against illegal immigrants. 'I see no reason why charges, in appropriate terms, should not be laid or why confiscation . . . should not be made by a court,' Judge Chua said. 'Otherwise it remains a profitable adventure for those such as the defendant who would make repeated intrusions into Hong Kong to commit crime.'