UPDATE: Mayor calls lack of charges in Morristown bomb scare 'inexcusable'

MORRISTOWN -- Police activity has closed down Market Street in Morristown Monday afternoon.

Police said in a Nixle alert local traffic delays are expected due to the closure off of the Morristown Green.

Motorists should avoid the area and plan an alternate route.

A spokesman for the Morris County Prosecutor's Office said an active investigation was in progress as of 4 p.m. and no additional information was immediately available.

Justin Zaremba may be reached at jzaremba@njadvancemedia.com. Follow him on Twitter @JustinZarembaNJ. Find NJ.com on Facebook.