Three mainland officers accused of conducting illegal raids into Hong Kong cannot be traced, according to a Security Bureau report which clears them of any wrongdoing. The Guangdong Public Security Bureau told SAR police one had died since the incidents in 1995 and 1996, while they said they no longer employed the other two. Legislators demanded a fresh investigation after a police report to Legco's security panel in January last year cleared the mainland officers. Lawmakers asked SAR police to check hotel and immigration records and for them to interview the three officers. But the Security Bureau report found: 'There is insufficient evidence to support allegations of breaches of laws in the incidents . . . nor can it be substantiated that mainland public security officials have exercised jurisdiction in Hong Kong. 'Having examined all the information available, the police consider that the outcome of the investigation previously conveyed at the special meeting of the Legco panel on security remains valid.' The case erupted last year when Su Suet, whose father, Su Zhi-yi, was arrested in Guangdong in October 1995, claimed mainland officers escorted her to Hong Kong that month to search her father's North Point home. Ms Su said in January 1996 officers escorted her father to the SAR and seized items from his safe-deposit box. Immigration records confirmed the entry of the public security officers at about the same time, but Hong Kong and Guangdong officials said the officers visited in a private capacity. Su Zhi-yi, 67, was sentenced to life imprisonment in Guangdong for embezzling $4 million from a state-owned company. His wife, Kam Shuk-yee, 57, was jailed for 15 years.