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David Zacher is trying to get an order of protection lifted so he can contact his two surviving kids. The original order of protection that prevents him from contacting his kids expires next month.

Prosecutors say Zacher's expressed an interest in writing to his son and a daughter he also tried to kill. The family of the children doesn't want that to happen. Monroe County Assistant District Attorney Doug Randall, who prosecuted the case in 2006, is asking the judge to extend the order of protection for another 100 years.

Randall says David Zacher is legally no longer the children's father.

"The Family Court found that he committed severe abuse on the children and the other family members obviously involved in committing the two murders and the assault,” Randall explained. “The Family Court decided they weren't going to allow him to have any parental rights, they terminated all of his parental rights. They freed the children for adoption."

JoAnn Haller, the children’s maternal grandmother, adopted Tyler, now 13, and Libby who is eight years old. The children have also changed their last name from Zacher to Haller.

JoAnn Haller says the two children had mixed feelings about their father’s request to re-establish contact with them.

"Libby takes things in stride. Tyler was quite anxious about it and he'll be glad when it's over, when there's a decision,” Haller said. “But we've reassured him that no matter what that we will protect them and they will be fine and they don't have to have any contact with their father."

Zacher's attorney, Monroe County Special Assistant Public Defender Drew DuBrin, declined comment following the court proceeding.

State Supreme Court Justice Joseph Valentino said he will render his decision on April 20.