MELISSA -- Police in Melissa are investigating after two people were found shot dead inside a home.

A welfare check was requested at about 11:30 a.m. Tuesday for a home in the 3000 block of Hickory Ridge. The caller told police she hadn't been able to reach anyone who lived in the home since Saturday.

Officers went to the home and found Karen Ann Ralston, 33, and John Paul Gaynor, 41, dead from gunshot wounds.

The Collin County Medical Examiner's Office has ruled Ralston's death a homicide, while Gaynor's was ruled a suicide. The relationship between the two has not been released.

Melissa police and the Collin County Sheriff's Office are investigating.