Here is the AK law on public records:

40.25.110

You can contact the agency involved and ask what information you might be able to receive. Open investigations or information that might put others at risk are not likely to be released. It is doubtful that the agency maintains a record of all the details you seem to want to try to fish for. Keep in mind that there is nothing unlawful or improper about a peace officer observing or paying special attention to a person of interest. He can follow the family member around all he wants so long as he is not breaking the law in doing so. And, had your family member not been breaking the law, there would have been no reason to arrest him, would there?

When officers target suspicious persons and identify criminals we most often refer to this as "good, proactive police work." But, observations cannot compel people to commit crimes - they make those decisions all by themselves.