TMZ is reporting that Young Money artist Nicki Minaj got into a fight at home with a maid and police were called to the house.  So awhile ago Nicki Minaj fired a maid for asking for her autograph.  Today, Nicki Minaj mistaking another maid for the unemployed maid she fired by going off on her and trying to fire her too.  This particular maid stood up for herself by not leaving the house.  Next, Nicki Minaj boyfriend jumped into the mix and started to push the maid.  It got so crazy, the police was called to her home but no one was arrested.  People close to the incident said Nicki Minaj mistaken the maid for the one she fired earlier.  LOL Whatever the story is, its crazy.

Here's the backstory. Law enforcement tells us, a couple of weeks ago, Nicki's maid took a photo of the singer out of the trash and then asked Nicki to sign it. Nicki got pissed and fired her.

Cops tell us, the maid did come back today, and Nicki became enraged and ordered her to leave. A source privy to the fight tells TMZ, the maid stood her ground, demanding not to be "treated like an animal" -- at which point, Nicki allegedly said, "I'll show you how to treat someone like an animal ... get the f**k out of my house!"

Now here's where the stories are a bit conflicting. One source says -- contrary to what the cops say -- Nicki actually made a mistake, saw another maid and assumed she was the one Nicki had fired.

We have had multiple people involved in the incident tell us ... the maid Nicki confronted was NOT the same maid she fired a few weeks ago. It was a case of mistaken identity.

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