•Four Amazon Prime electric delivery vans caught fire at the Rivian Electric Vehicle Service Center in southwest Portland around 2:30 a.m., leading to a large fire response.
•Firefighters faced challenges due to lithium-ion batteries causing toxic fumes and a thermal runaway process that made the fire difficult to extinguish.
•The fire burned for about 90 minutes, destroying the vans and requiring containment to prevent spread to nearby trees, vehicles, or buildings.
•Firefighters employed specialized nozzles to pierce battery compartments but ultimately had to allow the batteries to be consumed by fire due to reignition risks.
•The incident is being investigated as an arson case with evidence suggesting the fires were intentionally set.
•No injuries were reported; firefighters had to decontaminate their gear to avoid ongoing toxic exposure.
•Authorities request public assistance with information via a Portland arson tip line and email.