The mother of a Thai teenage boy who went missing in Tokyo on Monday wrote on her Facebook wall that she has found her son but that he had passed away. 

A four-year-old Thai boy, who along with his 60-year-old grandmother had found a bag containing nearly 40,000 methamphetamine pills by the roadside in Buri Ram province early last month, was run over by a pickup truck on Sunday morning while crossing the road, police said.