The Gloucester County Prosecutor's Office handed the investigation in January off to the state Attorney General's office but the status of the investigation also remains unknown.
K-9 Ember died in a hot SUV along with the pet dog of Gloucester County fire marshal Sean Layton but many questions about the circumstances and a delay in reporting their deaths remain.
The flagship march is on Washington, D.C., where participants plan to "demonstrate to our elected officials that we demand and deserve a nation free of gun violence."
A 26-year-old man faces numerous charges related to his alleged, attempted manufacturing of "ghost guns," firearms that are assembled from various parts not imprinted with serial numbers, making them hard to trace.
Authorities in Burlington County say a 38-year-old woman was found bludgeoned to death in her bed Wednesday afternoon and a person of interest in the case has been arrested.
State authorities are reviewing the deadly police shooting of a Gloucester County man, who had called 911 to report an armed intruder at his house in September.