Communist Laos said on Wednesday that a stash of radioactive caesium-137 seized by Thai police last week had not been smuggled through its territory. Thai police, tipped off by U.S. customs agents, said on Friday they had arrested a Thai national with 30 kg (66 lb) of caesium-137, possibly intended for use in militant attacks in the form of a “dirty bomb.” Thai officials said the suspect had confessed to smuggling the caesium from neighbouring Laos and more was being kept there. They said it was believed to have originated in Russia. But Laotian Ambassador to Thailand Hiem Phommachanh told Reuters authorities investigated the report and found nothing. Full Story