It is perhaps the least welcome house-warming gift you could receive at your new residence: Cryptic, menacing letters from a mystery person who claims to be watching you and your children at home.

It happened recently to a New Jersey family, just after they moved in. They have since fled the home, and the case even has town officials on edge.

In a lawsuit, the homeowners claim their large, six-bedroom home in Union County New Jersey is being watched. The residents paid $1.3 million for what they call their "dream home" in the town of Westfield.

They claim the previous owners were aware of a man who calls himself "The Watcher," but they never said anything.

"I would be pretty upset if I bought a house and found out that the previous owners knew about it," said Westfield resident Robert Hagen.

Since moving in, the owners say they've received numerous letters from the mysterious person.

The watcher claims the home "gas been the subject of my family for decades," and "I have been put in charge of watching and waiting for its second coming."

The new owners have several children, and other letters ask, "Have they found what's in the walls yet?' and 'I am pleased to know your names now and the name of the young blood you have brought to me."

The bone-chilling letters were enough to send the new family packing.

The incidents have been so unnerving that the Westfield mayor addressed the issue at a town council meeting Tuesday night.

"Our police department conducted an exhaustive investigation based on the factual circumstances and evidence available," Mayor Andy Skibitsky said.

No charges have been filed, and whether the owners have any legal case remains to be seen.

Mayor Skibitsky says that under New Jersey law, the letters are classified as a disorderly person's crime.