Suburban Phoenix sheriff's officials say multiple dead bodies have been found inside a home in an unincorporated area of Gilbert, east of Phoenix.
There's no immediate word on how many bodies or their ages or genders.
But Maricopa County Sheriff's spokeswoman Courtney Palma says they are being investigated as suspicious deaths at this time.
Aerial footage from television news helicopters show a sheriff's Incident Command Centre van at the scene along with a county medical examiner's SUV.
Palma says deputies responded about 9pm on Monday to the home.
Deputies arrived on the scene and reported finding several dead people inside the home.
Palma says homicide detectives are still at the scene investigating the deaths.