Washington, February 27 : Superstar singer Whitney Houston has warned Rihanna against reconciling with her ex-boyfriend Chris Brown after an alleged bust-up with him.

Cops are probing whether Brown made criminal threats after allegedly attacking the `Umbrella' hitmaker, following a pre-Grammys party on February 8.

Rihanna's father has already confirmed that her relationship with Brown is "over".

Houston has now advised the 21-year-old star to end the troubled romance for good.

"Don't make the same mistakes I did. Whenever you let your heart rule your head, you are bound to run into trouble," Contactmusic quoted Houston, who ended her turbulent marriage to Bobby Brown in 2007, as saying in a statement to Hollyscoop. com.

Houston and Bobby Brown split in 2006, and endured a messy divorce and custody battle over their teenage daughter Bobbi Kristina. (ANI)