MILLERSBURG • Borough police recently issued a letter urging area residents to continue to give authorities information on the August, 1989 disappearance of Tracy Marie Kroh of Enterline.

The letter was written by Officer Harold Trego, a criminal investigator with the police department. It has been posted in its entirety on a Facebook® page titled “Missing Tracy Kroh.” A link to that page also can be found on the Sentinel’s Facebook page.

Kroh was last seen in Millersburg the night of Aug. 5, 1989. She was 17 years old at the time she was reported missing. Authorities have labeled her case as a ‘‘crime’’ and are continuing to investigate the matter, saying they believe one or  more people have the information needed to bring the case to closure.

In the letter, Trego said that in his 16 years on the force, he has helped many individuals and families in the Millersburg area who have been victims of crime or who have struggled to stay on the right path.

Trego noted that there had been a ‘‘backlash’’ against the owner/operator of the page. (Specifics were not disclosed.) He also noted that because of the site, he has ‘‘ taken several calls with valuable information, and listened to your concerns.’’

Excerpts from Trego’s letter follow below.

‘‘In August 1989, Tracy Marie Kroh became a victim of a series of events which we in law enforcement believe has led to her disappearance, and ultimately her death. Perhaps an innocent accident or possibly other motives were at play. The end result was that a young promising life was extinguished forever with no answers as to how or why. What was left was a car sitting in (the Millersburg) square, and a family desperate for answers. Fingers were pointed, people were being persecuted in the court of public opinion, yet still no real answers, and more importantly, no Tracy.

‘‘At this point, I believe we are closer than ever in finding not only the truth, but the whereabouts of Tracy Marie Kroh. However, this can only be accomplished with the persistent questioning, and you all coming forward with what you saw, heard or know.

“As I have helped your family, I am asking you to join me in helping to get Tracy home to her family. If you know something but are in fear of retaliation, or just fear for not speaking up before now, put your mind at ease, as no one will persecute you for living in fear once you have come forward.

‘‘After 22 years, it is time we all join together with the information we are holding so the Kroh family gets the closure they desperately seek and deserve. Let’s all work together diligently in making 2012 as Tracy’s year. So I ask you to put aside your differences, and stop the petty squabbles; let’s roll up our sleeves and put the final missing pieces together in solving this unfortunate event.

‘‘Lastly, a word to the wise to those involved. The clock is ticking, your time is limited, the people of this valley will no longer tolerate the black cloud you put over this community. I suggest you take the high road, and make the best of it, and come forward, and own your mistake. If you decide to wait until the warrants have been signed, and law enforcement has arrived at your door, your cooperation is no longer needed and the chips will fall where they may.’’

“Remember: Tracy Marie Kroh is a person, a life, a daughter, a sister, a cousin, an aunt, a neighbor (and) a classmate, as well as a best friend. Also, Tracy is a member of this community. Tracy and her family deserve better, and better they shall receive. Advances in law enforcement techniques and forensics (are) rapidly closing the gap into her whereabouts, as well as the freedoms of those responsible.

‘‘I thank you in advance for your anticipated cooperation as the citizens of upper Dauphin County, as well as all levels of law enforcement, write the final chapter in this horrific event.’’

Contact information. Trego issued a copy of his letter to the Sentinel on police department stationary which lists the following contact numbers for the department: 692-4713, 692-2323 or 1-800-844-3110. The department’s e-mail is mbpd@policeone.com

In previous Sentinel coverage of the Kroh matter, the local number for the state police also was reported: 362-8700.