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.
So, pot has been legalized for just three months and one death has been attributed to it already. Unfortunately, we don't know how many deaths were attributed to alcohol in the same period, but regardless, we can no longer say that pot is harmless.
Mr Thamba, a native of the Republic of Congo, had reportedly begun taking classes at Northwest College in Powell, Wyoming, the same month.
Currently, 20 US states as well as Washington, DC allow for the sale of medical marijuana, while Washington state is set to introduce legal sales later this year.
Recently, US President Barack Obama said marijuana was no more dangerous than alcohol, while cautioning both were bad decisions.
Nonetheless, he has instructed the Department of Justice to halt prosecutions of banks that do business with cannabis firms.