(CNN) Mourning the loss of a mass-shooting victim and the gunman himself -- their daughter and their son -- the Betts family is "shocked and devastated by the events of Sunday morning" in Dayton, Ohio, they said in a statement.

The family also offered "their most heartfelt prayers and condolences to all of the victims, their families and friends," according to a statement read Tuesday by Police Chief Doug Doherty of nearby Bellbrook, Ohio.

The Betts family will cooperate with law enforcement in the "investigation into this tragedy," according to the statement. They also asked for privacy to mourn their loss and "to process the horror of Sunday's events."

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