Southampton Town police confirmed Monday that money was stolen last month at the home where Kourtney Kardashian and her boyfriend, Scott Disick, were staying during production of the upcoming E! reality show "Kourtney & Khloé Take the Hamptons."

On July 8, Disick, 31, originally of Eastport, "reported that $4,000 was taken from an attaché case located in the residence," public information officer Sgt. Susan Ralph told Newsday. "They've classified it as grand larceny third degree, which is based on the amount of money. It's an ongoing investigation."

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Disick and Kardashian, 35, who have two children together, were renting a house on Noyac Road in North Sea along with other members of the Kardashian clan. Kourtney Kardashian's new series focuses on her and sister Khloé's attempt to relocate their Dash boutique from Spring Street in Manhattan's SoHo to a location elsewhere while also opening a separate pop-up store -- their first -- in the Hamptons.

Kardashian already reportedly had $50,000 stolen in February from her house in Calabasas, California, outside Los Angeles.

The following month, her sister, Khloe Kardashian, reported to Los Angeles police that more than $200,000 in valuables had been stolen from the Tarzana, California, villa where she and her estranged husband, Lamar Odom, had lived in until the couple moved out after Khloé filed for divorce in December.

Representatives for Kourtney Kardashian and Disick did not immediately respond to Newsday requests for comment.