The family of a Dallas man fatally shot by police on Tuesday during a SWAT standoff says officers used excessive force against him while he was in a mental health crisis, and they plan to explore legal action, even as police say he twice charged at officers with a knife.

Paul Benes said his Tuesday night 911 call for help during his younger brother's mental health breakdown ended in a preventable tragedy.

"It was a medical call, and it kept escalating, escalating," he said.

He said Dallas police checked on Martin Benes, a local attorney who, according to his family, had been drinking and trying to hurt himself.

Dallas Police Chief Comeaux said during a press conference Wednesday morning that officers were called to a house in the 13800 block of Far Hills Dr. Tuesday around 7:40 p.m

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