Not able to delete large file from "Deleted from end user recycle bin" of site

Hi,

I have deleted a file of size 1335 MB and it is still exists at second recycle bin that is at "Deleted From End User Recycle Bin".

I am trying to delete it but unable to delete which gives me error as "Unknown Error".

Please help me out this.

Thanks in advance.

Regards,

Jayashri