An exchange student fell to his death after ingesting marijuana in Colorado - the first death linked to the drug since it was legalised in the US state. Levy Thamba, 19, plummeted from the balcony of a Denver hotel on 11 March after eating a cannabis-laced cookie. A post-mortem examination found marijuana intoxication was a factor in the Wyoming student's death. Colorado became the first US state to legalise recreational use of the drug in January. Mr Thamba, a native of the Republic of Congo, had reportedly begun taking classes at Northwest College in Powell, Wyoming, the same month.