Deleted Component appearing in BOM

Dear Guru's,

I m facing a strange situation where i have a BOM of material with one component and then i came to knw that,that material is not required any more so i removed the component and deleted the BOM.

But when i am running the MRP it is showing the deleted component,i am not able to understand hw it is happening.

Kindly throw some light on this.

With Regards.