Eight people are confirmed dead and over a hundred people are reportedly still missing on Monday after a landslide devastated a rural community in Washington state over the weekend.

According to officials with the Snohomish County Sheriff’s office, 108 people have yet to be accounted for after the mud flow tore through one square mile of a region north of Seattle. The landslide has been linked to groundwater saturation due to heavy rainfall in the area over the past month.

The estimated number of missing persons jumped from 18 after rescue crews scoured the area over the weekend; current estimates are being called a “soft” number.

Snowhomish County Sheriff Ty Trenary said on Sunday that rescue crews were “working both sides of the slide” and that “authorities were using helicopters to try to identify heat signatures, or people who may have been able to get free.”

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