The attack was announced via twitter and posted to pastebin.
The website is the main website for Newark and contains a heap of information and basic news services for people interested in the Newark area. The site also claims it is newly built, user friendly website and if this is true the developers may want to fix the exploits which have allowed this to happen.
The leaked data contains user and administration which all emails/usernames and encrypted passwords.
http://pastebin.com/CiQPDQgd