Singer Toni Braxton has canceled four more of her Las Vegas shows after being hospitalized for chest pain.

The 40-year-old Grammy winner is currently recovering at home after being released on Tuesday afternoon following precautionary tests at a hospital in Vegas. In the past, Braxton has been treated for pericarditis, a viral inflammation of the heart, but the current cause of her condition has not been disclosed.

The spokeswoman for the Flamingo Hotel and Casino and Harrah's Entertainment, Deanna Pettit, released a statement on Wednesday in regards to the shows saying, "We're going to go ahead and cancel her shows tonight and for the rest of the week. We expect she'll return to the stage next Tuesday."

Pettit also announced that the Flamingo Showroom is offering refunds for the canceled shows.

Braxton's act at the Flamingo, "Toni Braxton: Revealed," is currently scheduled for a two year run.