The total now stands at 21 bodies in the span of a week, with the specific type of canines still unclear.
Anyone who might have any information on the deceased animals is being urged to call either the Sheriff’s Office or Animal Control.
A second attacker was sentenced in November.
Zachary Robertson has pleaded not guilty to all charges and has a trial scheduled for late April.
The Sheriff’s Office expects more arrests to follow in the investigation.
The man is facing a felony charge ahead of what could be his fifth DUI conviction.
They say the victim and suspect knew each other but haven’t released many other details about the investigation.
Police are asking anyone who knows where she is to call 911.
Investigators believe the suspects’ activities are tied to a criminal organization based out of Mexico.
Lummi Police say they’re working to notify the man’s family members and will release his name once their investigation is complete.