MADISON, Wis. (AP) — The older brother of the suspect in a shooting spree says his brother called him to say goodbye during a standoff with police. Vajloogzeb (Vah-loong-jay) Vaj says his brother, Nengmy Vang, told him police had shot him and thought he was dying. Vaj says his brother told him police were after him because he had shot two people. Investigators allege he shot and killed four people. Vaj believes his brother, who he hadn’t spoken to in several weeks, suffers from severe mental illness. Vaj says Vang was increasingly unstable since separating from his wife a few years ago and had withdrawn from family and friends. He did not know what prompted Wednesday’s gruesome shooting spree.