NEWMAN LAKE, Wash. -- The Spokane County Sheriff's Office launched an investigation of the death of a woman in Newman Lake Friday afternoon.

The fire department responded to a report of a female with unknown medical problems and provided medical attention. Despite life-saving efforts, fire personnel pronounced the victim dead at the scene.

Deputies responded to the residence in the 14000 block of North Meadow Lane to assist fire personnel. Upon arrival, deputies said they observed obvious signs of physical assault.

According to a press release, the female victim and her boyfriend were involved in an unreported domestic violence argument Thursday afternoon. A 911 call was placed Friday morning after the woman was was found injured and unresponsive.

Spokane County Sheriff's deputies said the victim's boyfriend has been detained and is being interviewed.