LITTLE CHUTE, Wis. (WFRV) - Officers with the Fox Valley Metro Police Department have launched a death investigation after responding to a medical call early Friday morning. According to a release, officers were sent to a residence in the 700 block of Monroe Street in Little Chute for a "medical call for service" around 3:20 a.m. on December 20. Residential fire in Appleton causes $8,000 in damage, sends one to hospital When authorities arrived they found a woman suffering from 'critical injuries.' Despite life-saving measures, the woman was later pronounced dead at a local hospital. Officers are treating the incident as a death investigation. It was noted that it is believed to be an isolated incident. Anyone with relevant information is asked to contact the Fox Valley Metro Police Department at (920) 788-7505. No additional information was provided. Local 5 will update this story once more details are released.