A California man shot his two adult daughters on Monday, fatally wounding one and critically injuring the other before committing suicide while three young children were in the home.

Anthony Alvarez, 63, was found dead of a self-inflicted gunshot wound, the Tulare County Sheriff’s Department said in a statement. An 8-year-old girl called to report that guns had been fired before dawn, and police arrived on the scene to discover Alvarez’s body.

Jennifer Kimble, Alvarez’s 37-year-old daughter, was found with multiple gunshot wounds, the Associated Press reports. Kimble’s three children, two boys ages 13 and 11, and the 8-year-old girl, were at home when Alvarez shot their mother to death.

Kimble’s sister, 33-year-old Valerie Alvarez, was listed in critical condition with at least one gunshot wound. She was taken to a Fresno hospital, where her condition stabilized and she was admitted to surgery, Tulare County Sheriff Department spokeswoman Sgt. Chris Douglass said.

Local police continue to investigate the shooting. Autopsies for both Alvarez and Kimble are scheduled for later this week.

Douglass claims that investigators had no doubt that the man had shot his daughters before turning the gun on himself. “It’s a very cut-and-dried case,” she said. Authorities have yet to release information on a potential motive.

Kimble’s children were unharmed during the incident and have been reunited with their father, the AP reports. The father had been working at the time of the shootings, which occurred on a suburban street in Orosi, a town of around 9,000 people, located about 20 miles south of Fresno.

Before her death, Kimble had been a cafeteria worker at an elementary school located just one block away from her home. Her supervisor described her as a caring, dedicated employee.

"I'm just as surprised as anyone else right now," Brenda Lightfoot-Handy, director of food services at Palm Elementary, told the Fresno Bee. "I'm just trying to process this.”