Hawaii island police are investigating what appears to be a bullet hole in the door of the Subaru Telescope on Mauna Kea’s summit.

Officers responded late Saturday to a report of damage to observatory and opened a first-degree reckless endangering case and a second-degree criminal property damage investigation.

Police said the damage occurred sometime between Friday evening and Saturday evening.

The director of the Subaru Telescope, Nobuo Arimoto, issued this statement Sunday: 

“In the evening of Saturday, June 6, 2015, what appears to be a bullet hole was discovered on one of the side doors of the Subaru Telescope’s building on Maunakea. The diameter of the hole is about 9 mm (3/8 inches). At the time of discovery, there was no stranger or vehicle. It was not known when this had happened nor who did it. Maunakea rangers and the police were notified. Late night of June 6, police started the investigation and the Subaru Telescope is in full cooperation with the law enforcement.

“Since safety of the personnel working on site is the utmost concern, all the doors were secured while the night shift staffs are monitoring the webcams for any unusual activities outside. When the staff work outside, they will be vigilant in catching any sign of unusual activities in the premises and will ensure their own safety accordingly. If there is any further development, work schedule at the summit facility will be modified.”

Anyone with information about the incident is asked to call officer Nelson Cacho at 961-2213 or police at the non-emergency line 935-3311. Anonymous tips can be made to 961-8300.