Social media is a platform open to all and there is no regulation or self checking mechanism there. So, on one hand it is useful in getting information quickly, the other hand it is prone to misuse by unscrupulous elements of society for their hidden agenda. With the fast growing smart phone market and lowering cost of high-speed internet data pack services by telecom companies, people are more networked to each-other irrespective of their geographical locations. In recent times, it has been seen that social media is blamed increasingly in every social disharmony. Rumours spread very fast on social media and the time its authenticity is checked, it cause much damage to social fabric. The objective of the study is to find out whether social media had initiated rumors during Muzaffarnagar communal riots, 2013. In our investigation it was found that rumors were flying high on social media during riots and it was used to create division on communal lines to gain political mileage.