DAYTON, Ohio (AP) — The family of the Ohio shooter and his sister who was among the nine killed has released a statement saying they are devastated, and cooperating with law enforcement's investigation.

The family offered "their most heartfelt prayers and condolences" to the victims killed by 24-year-old Connor Betts, who opened fire early Sunday in Dayton's Oregon entertainment district.

Twenty-two-year-old Megan Betts was killed by her brother. Officers fatally shot him less than 30 seconds into his rampage.

The FBI has opened an investigation into the shooting, citing Connor Betts' interest in violent ideology.

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The family thanked first responders for their swift action to minimize casualties, and requested privacy "in order to mourn the loss of their son and daughter and to process the horror of Sunday's events."

Below is the entire statement: 

“The Betts family is shocked and devastated by the events of Sunday morning in the Oregon District. They offer their most heartfelt prayers and condolences to all of the victims, their families and friends. They thank the first responders from the Dayton Police and Fire Departments for their quick response to minimize casualties and to all who provided aid and comfort to the victims. They also thank Chief Doherty and the Bellbrook Police Department for providing a peaceful environment surrounding their home.

The Betts family is cooperating with law enforcement in their investigation into this tragedy. They respect the investigative process being conducted by the Dayton Police Department and the FBI, and will not comment further on the investigation. The Betts family would like to express their enormous gratitude and love for everyone that has reached out and given their support during this awful time. They ask that everyone respect the family’s privacy in order to mourn the loss of their son and daughter and to process the horror of Sunday’s events. Thank you.”

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