Authorities have arrested a registered sex offender on charges of having a sexually explicit chat with a teenage boy in New Jersey.      

Kevin Wild of Ramsey is charged with endangering the welfare of a child. The 28-year-old was convicted of child exploitation in Arizona's Maricopa County.  

The Passaic County Sheriff's Office says authorities launched a five-month investigation after the North Haledon boy's parents contacted them and said the suspect had tried to engage their child in inappropriate chat on Facebook.

Authorities say an investigator posed as the boy online and engaged in sexually explicit exchanges with the suspect.      

It's not known whether Wild has a lawyer.

Get the latest from NBC 4 New York anytime, anywhere. Follow us on Twitter, Facebook and Google+. Get our apps here and sign up for email newsletters here. Get breaking news delivered right to your phone -- just text NYBREAKING to 639710. For more info, text HELP. To end, text STOP. Message and data rates may apply.