Bell, who released her debut studio album in 2012, was “found in the 5500 block of E. Grant Road in Midtown Tucson,” according to Magos.
“The investigation is ongoing at the moment,” Magos said.
Bell executive Neill Smith told CNN he had “no further information to provide.”
Bell, a singer-songwriter from Cody, Wyoming, was reported missing by friends more than a week ago.
During his career, Bell, known for songs like “Where Ya Been?” and “Sometimes”, open for artists like Dwight Yoakam and Hayes Carll.
Singer-songwriter Kelsey Waldon tweeted on the news of Bell’s passing: “I was heartbroken to learn of the passing of Luke Bell. A group of us met in Nashville when we were so young and obsessed with country music – those years were so formative. He was extremely gifted and special. Go listen to Luke today. Rest in peace now, my old friend.