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BRISTOW, Okla. — Investigators were working Monday to identify a man who took more than $75,000 from an Oklahoma Walmart after disguising himself as an armored truck driver.

Bristow Police Chief Wayne Williams said authorities in northeast Oklahoma have received some anonymous tips about the identity of the man whose image was captured by a video surveillance camera.

"We've got some calls out on it, but nothing yet," Williams said. He said officials do not believe the suspect lives in the area.

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Authorities say the suspect entered the Walmart store in Bristow about 10:30 a.m. Saturday, walked to the cash office, signed for the deposit and walked out of the store. He drove away in a dark four-door Chevrolet.

"He came to the Walmart kind of dressed like a Loomis armored car driver," Williams said. Walmart employees called police after the real Loomis employee arrived about 45 minutes later. Bristow is about 35 miles southwest of Tulsa.

In this July 4, 2015 frame from surveillance video provided by the Bristow Police Department, a man leaves with more than $75,000 from a Wal-Mart after disguising himself as an armored truck driver in Bristow, Okla. Authorities say the suspect walked to the cash office, signed for the deposit and walked out of the store. Bristow Police Department via AP

Williams said Walmart has alerted its other stores about the theft and his department has notified other law enforcement agencies.

Walmart Stores Inc. spokeswoman Betsy Harden said she wasn't aware of any similar incidents involving other Wal-Mart stores.

"Obviously, it's an ongoing investigation," Harden said. She declined to comment on whether the Bentonville, Arkansas-based company plans to alter its policy on verifying the identity of workers who transport its cash deposits.

Williams said investigators have no evidence the suspect may have once worked for an armored transportation service and was familiar with its procedures.

"It's not something we suspect. It's a possibility," Williams said.

Loomis spokesman Danny Pack declined to comment on the case.