The Life of the Gun Used to Kill MIT Police Officer Sean Collier

Information contained in this chart was collected from a number of sources, including:

∙ “Gun Used by Suspected Boston Marathon Bomber Traced to Maine Gang,’’ Los Angeles Times, May 12, 2014

∙ “Portland Men Sentenced for Crack Cocaine Trafficking,’’ FBI press release, November 7, 2014

∙ “Merhawi ‘Howie’ Berhe, Who Allegedly Gave Gun to Tsarnaev Friend, Indicted,’’, March 17, 2015

Order Setting Conditions of Release for Merhawi Berhe, U.S. District Court, March 17, 2015

Arrest Summary for Merhawi Berhe, Portland (Maine) Police Department, July 1, 2014

∙ “Tsarnaev Friend Says He Gave Him Gun, Drugs Before Bombing,’’, March 17, 2015

Incident Report for Danny Sun Arrest, South Portland Police Department, May 1, 2013


Indictment Information Synopsis for Biniam Tsegai, filed in U.S. District Court, May 22, 2013

Executed Arrest Warrant for Biniam Tsegai, filed in U.S. District Court, May 23, 2013

Indictment Against Stephen Silva, filed in U.S. District Court, July 15, 2014

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