STATE COLLEGE, Pennsylvania (CNN) — A judge should require Jerry Sandusky to stay indoors during his house arrest because neighbors fear for the safety of children at a nearby elementary school, prosecutors said.

“He should be forbidden to be outside his home in proximity to a school playground, where his presence alarms teachers and members of the public,” Pennsylvania’s attorney general said in a motion filed this week.

Sandusky has been under house arrest since December. The former Penn State assistant football coach is accused of sexually abusing young boys over a 15-year period. He has pleaded not guilty to the charges.

Neighbors have expressed “grave concerns” about seeing Sandusky repeatedly outside his house, which borders a playground, prosecutors said.

Prosecutors Tuesday also blasted Jerry Sandusky’s recent request to see his grandchildren, saying the former Penn State assistant football coach should not be allowed to treat his house arrest like “a house party.”

“The public has concerns for the safety of the community under the present conditions. Those concerns will only multiply if (he is) granted more privileges,” prosecutors said.

Sandusky asked a judge two weeks ago to modify the terms of his bail so he could see his grandchildren or contact them via phone.

His lawyer argued that Sandusky’s “11 minor grandchildren … have expressed their sadness to their parents about not being able to visit or talk” with him, court documents said.

Prosecutors this week urged a judge not to allow the visits, arguing that Sandusky’s home is not safe for children, according to court documents.

Prosecutors also asked that Sandusky prove that his grandchildren or their parents want these visits.

“Jill Thomas, ex-wife of Sandusky’s son, Matthew Sandusky, strenuously objects to her three minor children having any contact whatsoever with Sandusky,” prosecutors said.

Along with being allowed to contact his grandchildren, Sandusky also asked the judge to allow him to have his friends visit his home, and that he be allowed to travel to meet with his attorney and private investigators working on his case.

That request also drew a strong response from prosecutors.

“(Sandusky) was fortunate to be granted house arrest when he is alleged to have committed at least 52 sexual offenses against innocent children,” prosecutors said in court motions. “He has been granted the privilege of being confined in his home, which is spacious and private and where he can eat food of his own preference and sleep in his bed at night. House arrest is not meant to be a house party.”

A hearing on this issue is set for Friday at a Pennsylvania courthouse, authorities said.

— CNN’s Sara Ganim contributed to this report.