MADISON, Wis. -- Months after being sent back to a mental health facility, a Milton man who killed his sister more than 20 ago is being released again.

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A Rock County judge ruled on Tuesday that Mark Staskal will move from a state mental hospital to an adult group home on Madison's East Side.

Staskal has lived at Mendota Mental Health Institute since being found not guilty by reason of mental disease or defect in the stabbing death of his younger sister, Marcy, at their parents' Milton home in 1984.

Rock County Judge Michael Byron granted a conditional release to Staskal to the group home provided that Staskal will receive proper care, WISC-TV reported.

Byron ruled that Staskal is rehabilitated enough to leave the facility. However, his parents said that the now 44-year-old has been fighting to leave Mendota for years, but they think he's just not ready.

Redgie Staskal said that he wants his son to stay at the Mendota facility.

"He's not well," Redgie Staskal said. "He's as sick today as he was the day he killed my daughter. If he was well, I would be fighting to get him out. But he's not."

However, state officials said that they think he's ready to leave. Glenn Larson, a forensic service manager with the state Department of Health and Family Services, said that officials with monitor Staskal's progress.

"He will not be in the community without an escort. He will have basically 24/7 line of sight supervision, to start with," Larson said. "A backlash of concern by the community is pretty endemic to this case. We're confident that this placement, the nature of it, the staff that will be working with him, is a good fit for his needs."

Staff at the group home is being trained specifically for Staskal's condition, and he could move to the home in two weeks, WISC-TV reported.

Staskal's treatment program at the group home will include weekly sessions with his doctors from Mendota.

Jason Standish, who operates the group home, said he feels his facility can support Staskal.

"I have been doing this for 12 years, and my girlfriend will be graduating with her master's degree in social work, and she lives at the home," Standish said.

The district attorney's office argued that Standish does not have a college degree and that a decision on Staskal's conditional release should not be made until the facility is fully prepared.

"The staff isn't in place yet. They still have to train some staff for that 24-hour type of supervision. And we don't feel that there will be enough supervision of the defendant at that location," said Ray Jablonski, assistant Rock County district attorney.

The district attorney's office said it is also concerned about the group home's close proximity to a Madison elementary school. The group home is located less than a block away from Lapham Elementary School.

However, Department of Health and Family Services officials said that this placement is Staskal's best option.

"I believe that it has components that ensure community safety, that insure constant ongoing monitoring of his mental health status, and offer the greatest chance for his reintegration into the community," Larson said.

Training the additional staff for the group home to care for Staskal could take as little as two weeks. At that point, Staskal could be released to the home, WISC-TV reported.

But the judge said that despite the district attorney's arguments, he saw nothing that proved the program for Staskal failed to meet requirements.

The Madison group home said it will keep a close eye on Staskal. Staskal will start out with 24-7 line-of-sight supervision and will have an escort whenever he is off the property. However, those conditions will be reassessed after 30 days.

Lapham Elementary School Principal Michael Hertting said he sent a letter home with students to inform families about the situation. In the letter, Hertting said that he went to the hearing to express concern over Staskal's proximity to the school.

He estimated that the group home is roughly 150 steps from the edge of Lapham's playground.

"The judge ruled, so we move on and we'll work with whatever agencies we can. We'll continue, as we do now, to be vigilant about safety at our school," Hertting said.

Hertting said his concern is for his 210 students and those attending the district's "affiliated alternative" programs on site. He said he has been told that Staskal's treatment plan is more restrictive than the community access he has now at Mendota.