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

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

— Morgan Rousseau (@MetroMorgan) June 24, 2015

The large knife taken from a mans car in front of moakley federal court just now. @MetroBOS

— nicoczar (@nicoczar) June 24, 2015

#BREAKING: man arrested outside #tsarnaev sentencing - had giant meat cleaver in car

— Jesse Grossi (@producerjesse) June 24, 2015

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