A 6-month-old boy and an 81-year-old man remained in critical condition Sunday morning at Harborview Medical Center in Seattle. Hospital spokeswoman Susan Gregg said two men, ages 37 and 58, were in serious condition, while a 25-year-old woman was upgraded to satisfactory condition.
Bruce Blacker, who lives just west of the slide, doesn't know the whereabouts of six neighbors.
"It's a very close-knit community," Blacker said as he waited at an Arlington roadblock before troopers let him through.
Search-and-rescue help came from around the region, including the Washington State Patrol and the Army Corps of Engineers. More than 100 were at the scene.
Dane Williams, 30, who lives a few miles from the mudslide, spent Saturday night at a Red Cross shelter at the Arlington school.
He said he saw a few "pretty distraught" people at the shelter who didn't know the fate of loved ones who live in the stricken area.
"It makes me want to cry," Williams said.
Hots said searchers would continue their efforts through the difficult debris field.
"There may be people in their cars, there may be people in houses," he said.
Associated Press writers Phuong Le and Chris Grygiel in Seattle contributed to this report.