Watch Inside Video of Mass Shooting.

Trenton, NJ: Governor Phil Murphy and First Lady Tammy Murphy respond to the aftermath of the a shooting at the Trenton Art All Night festival that left 20 injured and 1 person dead on Sunday, June 17, 2018.

Trenton NJ Art All Night Mass Shooting followed Notice to Hamilton Twp and Trenton City Police.

Trenton, NJ: Sunday’s Trenton Mass Shooting at Art All Night injuring 22 and killing 1 followed a public post on Facebook from a neighboring suburb Hamilton Township teacher.

Wilson Elementary School teacher posted “they will be shooting it up” on Facebook

in advance of the fatal mass shooting. The post was seen by Hamilton Township Police and Trenton Police.

Mercer County Prosecutor Onofri faults Facebook and recommends alerting Police with potential threats. “If you see something, if you hear something, say something,” “Why a person would post on Facebook if they were this concerned about violence breaking out at this event, there were only three numbers they needed to remember, and that’s 911.”