Jon Gosselin is attempting to shut down production of TLC's Kate Plus 8 by denying permission to videotape his eight children, according to reports.
Through his attorney, Mark J. Heller, Jon, 32, has written two letters to TLC lawyers. In the letters -- dated Sept. 29 -- Gosselin demands the network cease and desist production and leave his property, according to The Insider. On Thursday morning, he even posted a sign outside his family's $1.1 million estate in Wernersville, Pa. It read: "Notice: no film crew or production staff from TLC is permitted on this property under penalty of trespass."
In one of the letters, Jon's attorney writes: "Effective immediately, no production crews are to enter Jon's family home for any reason. In the event that anyone enters the marital property, Jon Gosselin will notify the local authorities to effectuate police action against any trespassers."
According to Gosselin's lawyer, both Jon and Kate, 34 -- who announced they were ending their 10-year marriage in June -- own the home where the show is filmed.
His attorney also tells ET the original agreement between TLC and the Gosselin family "may very well be 'null and void' and unenforceable." But he claims that TLC never secured the special permits required by Pennsylvania Child Labor Law as a "prerequisite" for the Gosselin children's involvement in Jon & Kate Plus 8.