A second Colorado State University freshman from Durward Hall was arrested on suspicion of possessing explosive or incendiary device parts.

Two arrests on the same counts in the same dorm tower in one week will draw questions, but the reporting so far does not tie them together. In the first case, testing has not confirmed that the substance is napalm. An arrest on suspicion of a felony is the start of a case. The charges a prosecutor files are still ahead.

CSU Police arrested a 19-year-old male freshman at 12:28 p.m. on Thursday, Oct. 15, 2026, according to Larimer County jail records cited by 9NEWS. He was booked on suspicion of possession of explosive or incendiary device parts, a class 5 felony, and reckless endangerment, a class 2 misdemeanor. 9NEWS reported that he was arrested at the residence hall on West Laurel Street in Fort Collins and that no bond had been set when the station checked jail records. CBS Colorado reported that CSU confirmed a second student had been arrested and that the arrest was at Durward Hall, the dormitory tower on the northwest corner of the campus.

His arrest came three days after the first. On Monday, Oct. 12, CSU Police were contacted by the university's housing services department after two students reported that a resident might have white phosphorus or napalm in his room, according to an arrest affidavit described by 9NEWS. CBS Colorado reported the affidavit says the resident, on the 12th floor of Durward Hall, asked the two students whether they wanted to see something cool before showing them a glass jar holding a sticky white substance that he called napalm. One witness told police he had talked about blowing things up, and a second said he claimed to have melted a camera with the substance and then placed the jar in the ceiling near his roommate's side of the room, 9NEWS reported.

Police executed a search warrant and found a glass jar with a substance consistent with napalm, along with aluminum powder, natural black iron oxide, and an empty pipe device consistent with an incendiary-type explosive device, according to the affidavit as 9NEWS described it. Authorities have not determined whether the substance is napalm. CBS Colorado reported that the Colorado Bureau of Investigation is working with CSU police on testing, that the Northern Colorado Bomb Squad was consulted and decided the building did not need to be evacuated, and that the university said all substances of concern were removed and there is no ongoing risk to campus. The first student's next court appearance is set for Oct. 22, 9NEWS reported.

Both students live in Durward Hall and face the same counts, but 9NEWS reported that it is not yet clear whether the arrests are connected, and CSU told CBS Colorado it could not release more details because the investigation is active. CBS Colorado reported that the first arrest came hours before campus police shot an armed man on Monday evening in what CSU called an unrelated investigation. All defendants are presumed innocent until proven guilty in a court of law.