Anti-virtual reality note included with bomb

Police and emergency personnel respond the scene of an explosion in Boston (WCVB/AP)

A hard plastic case that exploded on the campus of Northeastern University in Boston contained a rambling note that railed against virtual reality and referenced Facebook founder Mark Zuckerberg, a law enforcement official said.

Investigators are still trying to identify the motive behind Tuesday evening’s blast and are working to understand why the package was specifically sent to Northeastern, the official said.