Preliminary analysis from the Chemistry Department of Malaysia revealed that an extremely toxic chemical substance was used in the murder of Kim Jong-nam, the estranged half-brother of North Korean leader Kim Jong-un.

"The Royal Malaysian Police has received the preliminary report from the Chemistry Department of Malaysia, with regard to the death of a North Korean national recently."

"The chemical substance on the exhibits has been identified as ethyl s-2-diisopropylaminoethyl methylphosphonothiolate, or 'VX nerve agent'...