Boston Marathon misidentification & the Sunil Tripathi case
April 2013
In the chaos after the 2013 Boston Marathon bombing, Reddit users wrongly named several innocent people as suspects — including Brown University student Sunil Tripathi, who had already died by suicide a month before the attack.
What happened
Sunil Tripathi, a Brown University student, went missing and died by suicide on 16 March 2013 — a full month before the Boston Marathon bombing of 15 April 2013. He had no connection whatsoever to the attack. His body was recovered on 23 April 2013.
After the bombing, a subreddit called r/findbostonbombers (created 16 April 2013) attempted to crowdsource the identification of suspects from published photographs. Users wrongly named Tripathi, among others. The false accusation spread rapidly across social media and was briefly amplified by some journalists, and Tripathi's grieving family — already searching for their missing son — was subjected to a wave of online harassment and media intrusion. The actual perpetrators, Dzhokhar and Tamerlan Tsarnaev, were unconnected to any of the names Reddit users circulated.
Impact
The case remains the defining example of how a well-intentioned online crowd can cause grave real-world harm. It did not 'cause' Tripathi's death — he had tragically died weeks earlier — but the misidentification compounded the trauma of a family already in crisis and stands as a permanent caution against vigilante 'investigations'. It reshaped newsroom and platform thinking about verifying crowd-sourced claims during breaking-news events.