China's State Administration of Science, Technology and Industry for National Defence (SASTIND) said early today that the objects were monitored in the South China Sea at 6.7 degrees north latitude and 105.63 degrees east longitude, spreading across an area with a radius of 20 kms. The satellite images, which were captured around 11 am on Sunday, showed the objects measuring 13 by 18 meters, 14 by 19 meters and 24 by 22 meters respectively.The images are being analysed, according to the SASTIND.