HONG KONG - Interpol hasn't seen any intelligence that suggests a specific terrorist threat to the Beijing Olympics, but organizers should not let their guard down, the head of the international police organization said Wednesday.

Interpol secretary general Ronald Noble, speaking at a security conference in Hong Kong, said he was satisfied with the security measures being put in place for the Games, but officials should still be on the lookout for threats.

"I think prudence requires to recognize that it could be (a terrorist target)," he said.

China has called for closer international cooperation to prevent possible attacks, and has sought advice on Olympic security from the United States, Germany, Israel and other foreign governments

FBI head Robert Mueller said during a visit earlier this year that China's security preparations for the Olympics were impressive and that his agency was lending its expertise on fending off possible terrorist attacks.

China has also boosted anti-terrorism training for its military, with troops focusing on biochemical and nuclear threats and emergency rescue operations.