Three tonnes of food was confiscated by hygiene officers last night for testing and disposal, following the detection of cholera at a Fanling seafood restaurant. The Food and Environmental Hygiene Department ordered the temporary closure of the Star Seafood restaurant in Yat Ming Road after finding a strain of vibrio cholerae, which is threatening to humans, in a water sample taken from its fish tank. The sample was taken on July 20, as part of a routine surveillance programme on fish-tank water during the summer season, the department said. Department officers confiscated three tonnes of food from the restaurant yesterday afternoon to find out whether the bacteria came from the fish bought recently or was already in the water before the tank was restocked. The officers were also deployed to carry out thorough disinfection and cleaning procedures at the restaurant. To protect public health, the food and environmental hygiene director ordered the restaurant's immediate closure under the Public Health and Municipal Services Ordinance. It would remain closed until the government was satisfied with its overall hygiene and had determined that there was no immediate health hazard posed to diners. The restaurant manager said last night the source of the cholera was not yet known as the eatery had about a dozen fish suppliers. Last Thursday, a Tai Kok Tsui restaurant was ordered to close temporarily after cholera was found in its fish tank. It was still closed yesterday. A spokesman for the department advised the public to cook food thoroughly before eating as the cholera strain cannot survive high temperatures.