OSO -Three people are dead and eight more including an infant were injured Saturday after a large mudslide pushed mud, debris and at least one house on to Highway 530 near Oso, Washington.

Washington State Patrol Trooper Mark Francis said that the slide came down, completely blocking both lanes of the highway around 10:47 a.m.

There were at least three fatalities according to Snohomish County Sheriff’s Office spokesperson Shari Ireton. Among those transported to local hospitals were five adults and a six month old baby boy.

Harborview Medical Center reported Saturday evening that doctors were treating five of the injured including the 6-month old little boy who was listed in critical condition. The hospital also said a 37-year-old mane was in serious condition, a 58-year-old man was in critical condition and an 81-year-old man was also in critical condition. No other information was released about a fifth male patient.

Q13 FOX News reporter Jeff Van Sant spoke with the daughter of one of the male victims at Harborview. She said her father was in surgery, her mother was still missing and their home had been completely destroyed.

As of 1 p.m. officials had moved people back from the slide area, due to concerns that the North Fork of the Stillaguamish River was rising due to the slide.

Snohomish County Sheriff’s Department said that emergency response crews were coming from Snohomish and Skagit counties. In addition, a Navy helicopter from Whidbey Island and Snohomish Sheriff’s helicopter were responding, the Sheriff’s office said.

At least six houses were destroyed, but the Snohomish County Sheriff’s Office was still assessing how many other structures may be affected.

The cause of the slide is believed to be ground water saturation from heavy rainfall in the area earlier this month.