Would Taking Neighbors Cat to the Park Ok if it's Annoying?

There's this neighbors cat who's outside 24/7 in Los Angeles county and comes to his house every hour.,also wakes him up by meowing outside 3am in the morning. Would he get in trouble and would officers investigate if his neighbor suspects there's a thef inside the community apartment and if she files a report? What can he do in order to stay anonymous to them and to his family who lives with as well? His family doesn't mind but he does very much for many reasons. Neighbors doesn't really seem like they care much. He tried scaring the cat away but did not work