A mysterious piece of art found in a cluttered garage in Arizona, which is reportedly believed to be the work of Jackson Pollock, a renowned painter who was popular for his unique style of drip painting - may fetch $15 million at an auction next week, according to the reports.

The painting belonged to the estate of a Sun City retiree who was related to a New York City art collector, the Phoenix New Times reports.

The painting goes up for an auction on Tuesday next week at J. Levine Auction & Appraisal in Scottsdale.

“I'm convinced it's a Jackson Pollock, but nobody will attest that it's by Jackson Pollock,” Levine told the news weekly.

The painting believed to be the work of Jackson Pollock could easily fetch millions more if authenticated.

But a foundation, which is connected to Pollock’s widow no longer authenticates the abstract expressionist’s works.

According to the Prescott Daily Courier, there have been many more high-profile disputes in the past over the authenticity of Pollock paintings.

But Levine said that he hired private investigators and forensic experts to establish that the painting is a work of Pollock.

“Based on their work and findings, I believe this painting was one of Pollock’s missing gouaches in his catalogue raisonné or from the period of 1945 to 1949,” he said.

The painting which measures 22 ½ by 32 inches is being sold "as is."

Levine also sad that the painting has visible damage caused by moisture, heat and smoke.

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