From the article linked on page 2:
A new plaque is already being made. New York State as well as Suffolk County and the Town of Brookhaven have all offered to pay for the replacement. The town said it has received so many donations from private citizens that it needs to figure out who will make the final payment.
A local company has also offered to put in free surveillance cameras to monitor the site moving forward. The town hopes to have the cameras installed by the end of the month.