FAIRBANKS -

A joint memorial service for two Alaska State Troopers killed in the line of duty has been scheduled for this weekend.

Alaska State Troopers say in a release that the service for Sgt. Patrick "Scott" Johnson and Trooper Gabriel "Gabe" Rich will be held at 4 p.m., Saturday, in Fairbanks.

The public has been invited to the memorial at the Carlson Center, but the event is being closed to the media at the request of the families.

State flags will be lowered from Friday to Sunday to honor the two men.

Nathanial Lee Kangas of Tanana has been charged with two counts of first-degree murder. Authorities say in charging documents that he shot the men seven times with an assault rifle as the troopers struggled with Kangas' father last Thursday.