Washington authorities say the number of confirmed dead from the mudslide rises from 18 to 21

As the words to a hymn that include the phrase "On the road marked with suffering" are projected on a wall, the congregation of the Glad Tidings Assembly of God church in Darrington, Wash., sings Sunday, March 30, 2014 during morning church services. Much of the music and speaking was devoted to reaction to the deadly mudslide that hit the nearby community of Oso, Wash. on Saturday, March 22, 2014. (AP Photo/Ted S. Warren) (The Associated Press)

A sheriff chaplain offers a few words to a rescue worker as he enters the decontamination tent area at the west side of the mudslide on Highway 530 near mile marker 37 in Arlington, Wash., on Sunday, March 30, 2014. Periods of rain and wind have hampered efforts the past two days, with some rain showers continuing today. Last night, the confirmed fatalities list was updated to 18, with the number of those missing falling from 90 to 30. (AP Photo/Rick Wilking, Pool) (The Associated Press)

Authorities say the number of people who have been confirmed dead from the mudslide in Washington state has increased from 18 to 21.

Jason Biermann of Snohomish County Emergency Management said Sunday that 15 victims have been identified by the Snohomish County medical examiner. Six have yet to be identified.

Biermann says another four bodies were found in the debris field on Sunday. About 30 people remain missing after the massive mudslide in mountainside community of Oso on March 22.