Webster Police Chief Gerald L. Pickering from New York State commenting on a gunman who killed two firefighters as they tackled a fire, said that it appeared that the gunman had "set a trap" for them.
He added that the gunman had died from a gunshot wound.
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Speaking after the Westminster attack, Brad Smith exclusively told ITV News that Microsoft will only hand over data when legally compelled.
Kurt Cochran and his wife Melissa had been visiting London from the US to celebrate their 25th wedding anniversary and were due to fly home.