By Mark Duell Last updated at 5:26 AM on 1st March 2012 A father killed his wife and 16-month-old daughter then fled 1,100 miles across the U.S. before committing suicide in a hotel room, police said. Daniel Johnston, 29, of Oklahoma City, allegedly killed his wife Tara, 29, and daughter Allison, and was later found dead in Las Vegas, Nevada. After flying west on Sunday, Johnston committed suicide in the hotel room last night. He did it by cutting his wrists and ankles, his father claimed. Scroll down for video Mystery: Daniel Johnston, 29, of Oklahoma City, allegedly killed his wife Tara, 29, left, and daughter Allison, right, and was later found dead in Las Vegas, Nevada
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Daniel Johnston 'killed wife Tara and 16-month-old daughter Allison'
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Flew from Oklahoma City to Las Vegas to kill himself
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Police ponder motive as neighbours call them 'happy' and recall family walks
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For confidential support call the Samaritans on 08457 90 90 90, visit a local Samaritans branch or see www.samaritans.org
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In the U.S. call the National Suicide Prevention Line on 1-800-273-8255
‘It was clearly, clearly, a double homicide,’ @placeholder Police Sergeant Gary Knight said.