Kathy Hilton accuses Mauricio Umansky of poaching staff and giving just ONE day ... trends now

Kathy Hilton claimed that Mauricio Umansky gave one-day notice before leaving her husband's real estate company and poached staff on Wednesday during The Real Housewives Of Beverly Hills reunion. 

The 65-year-old socialite and wife of real estate tycoon Richard Hilton, 68, was asked by host Andy Cohen, 55, about the 'tension' that was caused when Mauricio, 53, left in 2011 to form his own luxury brokerage firm The Agency.

The season 13 reunion episode was filmed on January 26, weeks before Kathy's daughter Paris Hilton, 43, blasted her uncle Mauricio for publicly discussing the family feud on his Netflix series Buying Beverly Hills.

'Well, Kathy, it's no secret that Mauricio starting The Agency created tension between the families,' Andy said after Kathy made a late 'surprise' entrance to the third and final reunion episode.

Flashbacks were shown of Mauricio telling his wife Kyle Richards, 55, about being approached to start his own company while Kyle and her sister Kathy sat next to each other.

'Mau even wrote in his book regarding Rick's company that, "If they paid me what I deserved and showed me an inkling of professional love'', he would have stayed, "but they didn't see it that way." Those are all quotes,' Andy said.

'When he left, he did call on a Thursday,' Kathy said. 'And Rick said, ''OK, when are you planning on leaving?'' And he said on Friday. And [Rick] said, You're family. Just know opening your own business is tough. The door is always open for you. Just don't poach on my staff or my agents.'

'And did he?,' Andy asked.

'A few. And that put Kyle and I in kind of a funky...' Kathy said.

Kathy said that Kyle was aware of the circumstances and Kyle insisted that she did not want 'to get into that stuff.'

'I really don't,' Kyle said.

Kathy continued talking about it and Kyle made a point on Mauricio's behalf.

'But we also had people that were under him in the Umansky Group at Hilton & Hyland. So he had built his group within Hilton & Hyland,' Kyle said. 'I don't want to talk about business stuff like that.'

Kyle during the reunion episode wiped away tears while discussing the cracks in her marriage with Mauricio that were shown on the Bravo show leading up to the separation they announced last July after 27 years of marriage.

'So, Kyle, when did things really start to change? Is there an event that stands out as the beginning of what you called your hard year?,' Andy asked.

'Like with any

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