An investigation is underway to find three men involved with the defacing of a mosque in Massachusetts.

An investigation is underway to find three men involved with the defacing of a mosque in Massachusetts. 
Two of the individuals spray-painted 'USA' across the front of the Burlington building while a third waited in the car. 
Worshipers inside the structure at the time were warned not to go outside, as safety was a concern. 
Authorities investigated the site on Sunday morning and also found broken eggs scattered around the Islamic center. 
A review of surveillance footage rev