The man police were searching for after his brothers deathhas been taken into custody in Warren.
State Police say Stephen Throckmorton was found in a home in Warren. He lives in that town but it is not clear if he was at his own home.
Schools in the Region 6 district towns of Warren, Morris and Goshen were closed Tuesday because of the continued search.
State police don't label Throckmorton a suspect, but consider him a witness.
Twenty-one-year-old Ronald Throckmorton was shot and killed at a home on White Birch Drive in Southbury Monday afternoon.
State police aren't labeling the incident as a homicide, but are calling it "a shooting death.
The search for the brother began after witnesses told state police about a vehicle fleeing the scene of the shooting.