A man fatally shot his estranged wife and three other relatives, including his 8-year-old niece, at a home in suburban Houston over the weekend before killing himself, authorities said Wednesday.

Alrick 'Shawn' Barrett, 46, opened fire at the home just before 7 a.m. Saturday after returning his young child from a visit, Fort Bend County Sheriff Eric Fagan said at a news conference. Fagan said that after arriving at the home, Barrett told his estranged wife that he wanted to reunite, but she refused.