The victim was identified as Saleman Abdiraham Dirie, a Somali national who immigrated to Ottawa, Ontario about a year ago.

ABC's "Good Morning America" reported Wednesday that while investigators haven't found indications that foul play or terrorism were involved in Dirie's death, the FBI has joined the case.

Cyanide is a fast-acting poison that can be used as an ingredient in a chemical weapon.

ABC said the 29-year-old Dirie's body was found in a hotel not far from the state capital. Authorities haven't said why he was in Denver.