Authorities in Oregon said one person is dead, and five others were injured in a shooting at a park in Portland on Saturday.
Police said one woman died, and two men and three women were injured and taken to a nearby hospital.
Their conditions were not immediately released.
"The scene was extremely chaotic, and a number of witnesses were uncooperative with responding officers," police said in a news release. "Most people on [the] scene left without talking to police. Detectives believe a large number of people either witnessed what happened or recorded the incident as it unfolded. This is a very complicated incident, and investigators are trying to put this puzzle together without having all the pieces."