The sister of a gunman who was among three people killed in a shootout at a home near Texas A&M says her family is "just distraught by the havoc he has caused."

Authorities have identified the shooter as 35-year-old Thomas Alton Caffall. Police say Caffall opened fire on Monday from inside his home in College Station as he was being served an eviction notice. Killed in the shooting were a law enforcement officer, a bystander and Caffall.

Caffall's sister Courtney Clark says her family is shocked by what her brother has done.

Clark says, "Our hearts and prayers go out to the families, and this is just a senseless tragedy."

Clark declined to say anything else about her brother or what might have prompted him to commit the shooting.