UPDATE (11:02 a.m., Oct. 16):
According to an update from Tucson Police Department, detectives conducted a follow-up investigation, which led to the positive identity of the suspect.
They located the suspect, identified as 19-year-old Ian Julius Tenario, Thursday morning and took him into custody.
Tenario was arrested on suspicion of aggravated assault with a deadly weapon and discharging a firearm in city limits, the news update said.
Tenario was also the suspect in a violent attack in September of 2025, the update said, in which he had been identified but had not yet been located or arrested. In that case, he was charged with one county of aggravated assault and one count of aggravated assault with a dangerous instrument.
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Tucson Police confirm they’re investigating a shooting that happened inside a Sun Tran bus on Tuesday.
According to TPD, evidence shows the victim and suspect got into a verbal argument that escalated into a physical fight.
Police said the bus driver stopped the bus on Irvington just west of the I-10, where the suspect pulled out a gun, pointed it at the victim, and fired and missed.
TPD said the bullet struck the rear seat area, and the suspect ran from the scene and is still outstanding.
Officers said they found a shell casing inside the bus, confirming evidence of the shooting.
No one was hurt, and the investigation is ongoing, officials said.
