SEOUL, South Korea, Rabi'I 28, 1437, Jan 8, 2016, SPA -- A South Korean research institution said that a small amount of radioactive elements was found in air samples collected from the peninsula's eastern seas after the blast Wednesday in North Korea, AP reported. The institute said, however, that the measured amount was too small to determine whether the North had really detonated a nuclear device. The Korea Institute of Nuclear Safety said the level of xenon-133 isotopes found in the samples was similar to levels normally detected at its two radioactive gas detectors on the eastern and western coasts. KINS official Lee Ki-hyeong also noted that other types of xenon isotopes used to confirm nuclear explosions weren't detected. Lee says the institute will continue to collect and analyze more samples. 7 p.m. --SPA 15:53 LOCAL TIME 12:53 GMT www.spa.gov.sa/w