Boy, 3, among 3 dead in Texas glider crash

(CBS/AP) WALLIS, Texas - Authorities say three generations of family members, including a 3-year-old boy, are dead after their glider crashed into a field in Southeast Texas.

The Texas Department of Public Safety says the crash happened around 5 p.m. Sunday near Wallis, about 40 miles west of Houston.

Investigators said the glider was being towed by another plane just before the crash. When the tow plane released the glider, the glider apparently went into a nosedive and crashed at Highway 36 and Cougar Road, near the Austin-Fort Bend County line, reports CBS Affiliate KHOU.

The department says 68-year-old Fred Blair of Wallis; his daughter-in-law, 32-year-old Matilda Blair; and grandson, 3-year-old Andrew Blair, all died in the crash.

Trooper Erik Burse said the Blairs resided in Houston.

The glider was registered to the Greater Houston Soaring Association, where Fred Blair was an instructor.

The exact cause of the crash was under investigation Monday morning.