Man With Large Knife Detained Outside Courthouse Where Boston Bomber Is Being Sentenced

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The sun rises at John Joseph Moakely United States Courthouse, prior to the offical sentencing of Boston Marathon Bomber Dzhokar Tsarnaev, in Boston, Mass. on June 24, 2015. Scott Eisen/Getty

A man was detained on Wednesday afternoon outside the Boston federal courthouse in which Dzhokhar Tsarnaev, the Boston Bomber, is being sentenced.

The man, who was not identified, pulled a large knife from under his license plate. The man's car, a Honda SUV, was searched by authorities.

His motive was remains unknown. No one was injured in the incident.

#Breaking: Man pulled up outside court where #Tsarnaev is, pulled a butcher knife out of his license plate @MetroBOS pic.twitter.com/UPxCnxe7bd

— Morgan Rousseau (@MetroMorgan) June 24, 2015

The large knife taken from a mans car in front of moakley federal court just now. @MetroBOS pic.twitter.com/JtSJQ8xPuw

— nicoczar (@nicoczar) June 24, 2015

#BREAKING: man arrested outside #tsarnaev sentencing - had giant meat cleaver in car pic.twitter.com/QXMid7hQWD

— Jesse Grossi (@producerjesse) June 24, 2015

This is a developing story and will be updated as more information becomes available.