The Wong Tai Sin district commander, Chief Superintendent Ian Seabourne, said officers had been sent from urban areas to Sai Kung and the police tactical unit was helping with roadblocks and rapid-response action. Police say it is not just burglars who need to watch out. Drink-drivers, drug peddlers and assorted petty criminals can expect to be caught in the dragnet.

'And that goes for all sections of the community,' Mr Seabourne said.

'We have had complaints that the actions of certain sections of the Sai Kung community have escaped the attention of the police. This is no longer the case.

'In the old days, there was a tendency among some officers, for instance, not to search a woman. Likewise, expatriates often were waved through at roadblocks. We are now dealing with every person in an equal manner.'

A recent operation produced four drink-driving arrests, while a further 10 drivers received warnings.

'These operations will continue until I am satisfied with the situation and I ask for motorists' understanding and patience should they experience delays as a result of our actions,' Mr Seabourne said.

Sai Kung is one of three divisions in Wong Tai Sin and one of the biggest in Hong Kong. Its sprawling, rural ruggedness, with a population of about only 50,000, presents policing difficulties, but Mr Seabourne said it was not a major problem area.

'I do not want to suggest to residents that they are in grave danger. This is certainly not the case.

'In fact, crime is very low there. In March, there were only 67 crime reports in the whole division.

'Of these, 17 were burglaries. In February there were 23 burglaries and in January, 30, which was a high that persuaded me to take further action. Some people have said, 'Well, if the crime rate is so low, why bother?' but to me it is simply unacceptable.

'We have the resources to deal with this problem and we shall do so.'

Mr Seabourne said burglars could be broken into three categories.

These were illegal immigrants or two-way permit holders from the mainland; local residents who had the opportunity to size up potential targets; and professional criminals.

'It is the professionals who probably pose the biggest problem,' he said.

Mr Seabourne said police could provide only part of the solution. Residents and landlords should take measures to ensure their properties were secure, and were welcome to approach police for advice.

'And remember, if you see something suspicious, report it immediately.

'Phone 999 rather than your local police station, as this will produce a faster response,' Mr Seabourne said.