UPDATE (1:05 p.m., July 1):
Tucson Police confirmed the shooting that took place in the 400 block of West Virginia Street was a murder-suicide.
According to the news release, TPD responded to a 9-1-1 report of gunshots from the residence at 9:45 a.m. Sunday, June 30.
Upon arrival, officers entered the home to find two deceased individuals: 60-year-old James William Modesitt and his sister, 59-year-old Ramona Catherine Fernandez.
Detectives determined Modesitt shot and killed his sister, Fernandez before turning the gun on himself, the news release said.
The investigation is ongoing and there are no outstanding suspects.
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An investigation is underway near 11th Avenue and West Virginia Street on the Southside after what Tucson Police say is an apparent murder-suicide.
According to T.P.D, a man and woman in their 60s were found dead in a home.
KGUN 9 spoke with neighbors around the home who shared they had all been living in the area for many years. They said they had not spoken to the people living at the home where police were investigating.
One neighbor, Tina Morales, shared that there was unusual behavior at the home the Friday before the incident.
"You never know who moves in," Morales said. "I don't know how long they've been there. What caught my attention was the drilling. What is he doing? Drilling in the middle of the day, the whole day. He wouldn't stop. In the middle of the heat, I'm like, 'What is he doing drilling on the concrete?'
"My son picked me up to go to the doctor's and when we came back, he was still out there. And that's when we conversed about what's going on."
Details are limited at this time. The investigation is ongoing.
Stay with KGUN 9 for the latest developments on this story.