Probably just workplace violence.
Via CBS:
An area of Atlantic Ave. in Boston was shut down as bomb technicians blew up a suspicious suitcase left by an unknown man next to a Homeland Security vehicle.
The suitcase could be seen Friday morning on the ground next to a police SUV on Atlantic Ave.
Boston Police Commissioner William Evans said the bag was left by an unidentified man who then quickly left the area. Police say the man is not a suspect, but they want to talk to him about why he left the suitcase behind.