SEATTLE — One person was killed and seven others were wounded in a shooting in downtown Seattle on Wednesday, just as the streets were teeming with people during the evening rush hour, officials said.

Investigators were still searching for more than one suspect, Carmen Best, Seattle’s police chief, said during a news conference nearly three hours after the 5 p.m. shooting. She said the attack stemmed from a dispute in front of a McDonald’s and that it was not a random shooting.

The police were reviewing security camera footage and other forensic evidence to try to get answers, said the chief, who described the sequence of events as “murky.” It was not immediately clear how many people opened fire.

“I don’t see any future danger to the public,” Chief Best said.

Among the survivors, the most serious injuries were suffered by a 55-year-old woman, who was listed in critical condition, and a 9-year-old boy, who was initially listed in serious condition but improved to satisfactory condition later in the night, authorities said.