The caller told Montgomery County deputies he had shot his brother.

MONTGOMERY COUNTY (KTRK) -- A suspect was detained after reportedly shooting and killing his brother in Montgomery County on Tuesday morning, authorities said.
According to the Montgomery County Sheriff's Office, deputies responded to a firearms disturbance in the 20700 block of Kenswick Park Drive at about 8 a.m. Investigators said the 911 caller said he had shot his brother.
When deputies arrived at the scene, they began life-saving measures on the victim; however, he was later pronounced dead, MCSO said.
Authorities said the suspect was detained at the scene and there is no active threat to the public.
MCSO said its detectives responded to the scene and are actively investigating the shooting.