Four children and two adults were killed in a mass shooting at a home in a suburb of Houston, Texas, the Harris County Sheriff has confirmed.
Local news station KHOU 11 wrote on Twitter.
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The former reality TV star will follow in the footsteps of Abraham Lincoln and John F Kennedy when he takes his oath later on Friday.
The President-elect's comments on Twitter will come under even closer scrutiny when he takes office on Friday.
Cold, quiet and calm