NASHVILLE, Tenn. (WKRN) — Kathy Thoreson had just returned home from a breakfast meal when she said she heard multiple shots ring out Monday morning.

Thoreson lives in the Burton Hills area where The Covenant School is located. A 28-year-old female reportedly opened fire inside the school at about 10:13 Monday, fatally wounding three students and three adult staff members. According to Metro Nashville Police Spokesman Don Aaron, the identity of the shooter is not yet known, but she was killed by Metro Police who responded to the scene.

Thoreson said some of the shots were louder than the others and at first thought the sound may have been roofers.

“The first about eight or ten shots were very loud,” she said.

Then there were more that followed that were quieter than the initial round of gunfire.

It was at that point she realized the sound was not roofers but rather gunfire. It rattled her, she indicated to News 2.

“I have four grandkids here. I mean, I can be thankful, but I am so sad for these parents and kids,” she said. “It’s very tragic. It’s two blocks from our house. It could happen at any school. It’s very tragic. It really is.”

This was the ultimate nightmare for any child or parent, she told News 2. Thoreson has lived in the area for about three years and never expected this to happen at her home.

“You never think it’s going to happen where you are,” she said.

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This is a developing story. WKRN News 2 will continue to update this article as new information becomes available.