Itr not filed, notice received

Gargi (CMA) (31 Points)

07 September 2015  

I did not file my ITR for F.Y. 2012-13 due to some unavoidable reasons and now I have received a notice from IT dept to furnish the reason for not filing the itr. Is there any way to file the ITR now whether manually or electronically? Also how to file a compliance online giving a suitable reason?