The Texas Rangers are the equivalent of what other states call the state police. Jean was pronounced dead at an area hospital.
The 30-year-old Guyger killed 26-year-old Botham Jean on Thursday.
"Which is why they pulled back on the warrant", he said.
"This family is frustrated".
"I believe in prayer and think God can heal", Tease said in welcoming the crowd, which included a sizable contingent of Harding alumni as well as many of Botham Jean's colleagues from PricewaterhouseCoopers, where the 2016 accounting graduate worked.
One of the officers was trying to search Perez when he became combative, the affidavit said.
During a press conference, Dallas Police Chief Reneé Hall asked the community and the media for patience and cooperation.
Responding officers found Botham Shem Jean, 26, badly wounded. She was not injured.
Kinsey said she could see from her patio that the lights were turned on in Jean's apartment. Blood sample has been drawn for alcohol and drug tests.
Police referred questions to the Rangers. The department had requested a warrant on Friday.
During a criminal justice panel on Saturday, Hall vowed that the police department will be transparent.
Hall said the Texas Rangers have asked Dallas police to delay acquiring a warrant to arrest the officer in order to investigate further, WFAA-TV reported. Dallas police chief U. Renee Hall told reporters that the shooting was "a very unique situation".
His mother flew over to Dallas following the shooting.
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Jean's mother, Allison Jean, said the news was devastating and suggested on KXAS that race may have been a factor in her son's death.
"There is so much rhetoric surrounding this incident".
"Right now there are more questions than we have answers", she said. "Allow us to get to the bottom of those answers that we could give to you, and then let's have a discussion".
Before Sunday's action against Guyger, the family's lawyer, Lee Merritt, said the lack of an arrest had added to the family's grief.
According to police, Guyger shot and killed Jean after returning in uniform to the South Side Flats, where they both had apartments, following her shift.
What happened next is unclear, but the officer eventually fired her gun. Ms Jean said over the weekend. Jean frequently led singing at the university chapel and during campus events.
At the very early stages of this investigation - initial indications were that they were what we consider circumstances of an officer involved shooting. Jean was excited about singing it, though he had not heard of the song. She then shot the Saint Lucia native in the chest, killing him.
Harding University President Bruce McLarty shared fond memories of him after learning of his death.
Jean was an accountant at PricewaterhouseCoopers in Dallas, an worldwide company that does assurance, tax and advisory work for firms around the world.
"This is a awful tragedy", the professional services and auditing firm said via Twitter.
Jean's family has also hired attorney Benjamin Crump, who is best known for representing the families of Trayvon Martin and Michael Brown.
Dallas Mayor Mike Rawlings said: "Botham Jean was exactly the sort of citizen we want to have in the city of Dallas".