Allison Jean, who has held government posts in St. Lucia, where she lives and where her son grew up, said her son's death "just feels like a nightmare".
The Dallas police chief announced at a press conference Friday afternoon that authorities are in the process of obtaining a warrant to arrest the officer involved, who has not yet been identified.
According to a news release, the officer arrived "home" around 10 p.m. Thursday after working a full shift.
Jean was the son of Allison Jean, former Permanent Secretary of the Department of Education, Innovation and Gender Relations for St. Lucia, according to St. Lucia Ambassador Anton Edmunds.
Police spokesperson Sgt. Warren Mitchell refused to comment on whether the officer mistook him for an intruder.
Friends of Jean's have taken to social media leaving their thoughts, prayers and well wishes for friends and family of the young man.
Dallas Police Chief Rene Hall said in the interest of being as transparent as possible, she has invited the Texas Rangers to take over the investigation. "So there's a lot of information I understand you guys want but this is all we can give you at this time", Mitchell said.
The officer, who has not immediately been identified, has been placed on administrative leave during the investigation, NBC News reported.
The man was taken to the hospital and pronounced dead.
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"At the very early stages of this investigation - initial indications were that they were what we consider circumstances of an officer-involved shooting". A blood sample was drawn to test the officer for drugs or alcohol. Jean agreed but later confessed that he had said yes without actually knowing the song.
He was active in his faith community, Churches of Christ.
Botham Jean attended Harding University in Arkansas and, after graduating in 2016, he had been living and working in Dallas at accounting and consulting firm PwC.
Harding University posted a statement online regarding the shooting that said Jean "frequently led worship for chapel and for campus events". "I jumped up, went to my door, looked out the peephole. I'm getting calls from all over the world". Jean may have learned about the college through the student missionaries, Frazier said.
"He did no one any wrong", the victim's mother Allie Jean told NBC News over-the-phone.
"We hope to bring understanding to the family", she said.
Jean, a native of St Lucia, was listed on LinkedIn as a risk assurance experienced associate at PricewaterhouseCoopers.
"This is a bad tragedy", a PwC spokeswoman said in an email.