Relatives said Jeremiah Monroe was last in Brant Lake at the time of his father's death.
Bentley said the town would likely have some kind of response to Jeremiah's passing, but that it was too early to have concrete plans.
School officials and area community leaders, expressing sorrow, also confirmed they heard the news mid-afternoon Friday.
Monroe is the fourth soldier in recent years from the area to die while on duty in the mideast wars.
In June 2008, Army National Guard soldier Mark Palmateer, who spent a decade in Wevertown and North Creek in his adult years, died in an ambush that included an improvised explosive device, small arms fire and rocket-propelled grenades. He left behind friends and family members, including a daughter Stephanie.
Army Staff Sgt. Kevin Kimmerly of Johnsburg died in September 2003 when a rocket-propelled grenade struck his vehicle in Baghdad, Iraq.
In 2004, Nathan Brown of South Glens Falls, an Army private, was killed by a rocket-propelled grenade after it struck an un-armored truck carrying members of his platoon in Samarra, near Baghdad.
The story of Brown and his half-dozen friends signing up for the Guard and their subsequent military service - resulting in their serious injuries and Brown's death - was portrayed in a nationally-televised NBC special that some consider to have been a pivotal element in realigning public opinion against the war in Iraq.
Monroe's funeral arrangements will likely be handled by Barton-McDermott Funeral Home in Chestertown.
Jim McDermott said Saturday that the Monroe family members were in Dover Delaware, awaiting the return of Jeremiah's remains, and that Robert Jr. had flown back to the U.S. from Italy to be with family members.
"This death has really rocked the entire community," McDermott said, noting that many people were grieving the Monroe family's loss because of their deep local roots.