Dallas Police are charging a fellow officer with manslaughter for shooting death of a 26-year-old she mistakenly thought was in her apartment.
Responding officers administered first aid to the victim, but he died at a local hospital.
Allison Jean in comments Friday broadcast by Dallas TV station KXAS questioned whether the off-duty officer would have reacted differently if she encountered a white man.
The officer, who hasn't been named, will be placed on administrative leave pending the outcome of the investigation. Clark, 22, was fatally shot earlier this year by officers in the backyard of his grandparents' home in Sacramento, California.
A vigil has been organized this evening by Mothers Against Police Brutality outside Dallas Police Headquarters at 7 p.m.
Police are still determining what interaction took place between the female officer and Mr Jean. Hall also confirmed the department is obtaining an arrest warrant for the officer involved and that blood was taken from the officer for a drug and alcohol test. He said he waited outside and heard his mother's cries through the closed door. He told me he had never heard the song before, but that day, he called back to Saint Lucia and asked his grandmother to teach him that old hymn on the phone.
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Allison Jean told NBC News that she doesn't want to judge the police officer who shot her son but wants an explanation.
Sgt. Mike Mata, president of Dallas' largest police employee organization, the Dallas Police Association, on Saturday called for an "open, transparent and full investigation of the event", the Dallas Morning News reported. At some point she did fire her weapon, ultimately striking Jean. The private school said Friday that he often led campus worship services while he was a student. "I mean, we have not interviewed her, and like I said this is just a preliminary statement". "I'll remember his smile", she said.
"Right now, there are more questions than we have answers", Hall told reporters Friday.
Jean worked at PricewaterhouseCoopers in Dallas, an worldwide company that does assurance, tax and advisory work for companies around the world.
"Somebody has to be insane not to realize that they walked into the wrong apartment", Allison Jean, who lives in the family's native St. Lucia, told NBC News. "I don't know if she was exhausted but that's pretty scary", Richard Healy Nelson, who lives in the complex where the shooting occurred, told FOX 4 News.
"He lived what he spoke", Monan said, adding that Jean's death has stirred emotions of sadness and anger.