Toni Braxton took to social media to mourn the sudden passing of her niece, Lauren Braxton.

Lauren (“LoLo”), who is the daughter of Michael Braxton Jr., was found unresponsive in her Maryland home on Monday.

[Read Also: CONDOLENCES: Lauren Braxton Passes Away At 24]

Her father says her death was caused by a pre-existing heart condition.

Toni was in Trinidad and Tobago performing at their Jazz Festival when Lauren died.

On Wednesday, she posted the following message on her Instagram page:

R.I.P to my amazing niece Lauren “Lo Lo” Braxton…
I’m still in disbelief and so very heartbroken ?? Love you…always auntie “Te Te”

See Toni’s original post below.

My sincerest condolences to the Braxton family during this difficult time.

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