Updated at 3:07 p.m.: This story was updated with additional cases dismissed in which Amber Guyger was the arresting officer.

In the months since Amber Guyger fatally shot Botham Jean in his home, prosecutors have dismissed at least nine cases she investigated when she was still a Dallas police officer.

Dallas County prosecutors in one case wrote that they were asking a judge for a dismissal because the fired officer had been "indicted for murdering an innocent man in his own home," court records show.

Amber Guyger (Mesquite PD)

Guyger was in uniform but off duty when she shot the 26-year-old Jean last Sept. 6. She told authorities she had confused his apartment for her own and thought he was a burglar. Her murder case is set for trial in September.

Four of the dismissed cases stemmed from the arrest of two men during a January 2018 traffic stop by Guyger and another officer. Three of those involved drug charges. The fourth, involving an allegation of unlawfully carrying a weapon, was also dismissed, and the gun was returned. But prosecutors' motion to dismiss that case was not found in the court file.

Since Jean's shooting, judges have dismissed at least five more cases at prosecutors' request in which Guyger was the arresting officer, court records show. But prosecutors did not refer to Guyger in their motions to dismiss the cases. Most of those were also drug cases.

It was unclear how many cases could be affected by Guyger's murder indictment.

Two of the nine cases were dismissed after John Creuzot took office as district attorney in January. Seven were dismissed while his predecessor, Faith Johnson, was in office.

A spokeswoman for Creuzot said the district attorney's office hadn't tracked how many of Guyger's cases had been dismissed by prosecutors. Kimberlee Leach said there was at least one and probably others, but she declined to comment further.

Republican Faith Johnson lost her bid to keep her job as Dallas County district attorney in a tight race against Democrat John Creuzot. Creuzot took office in January. Both have dismissed cases in which fired Dallas Officer Amber Guyger would have been a witness. (Staff photos)

The judge overseeing Guyger's case has issued a gag order to bar attorneys involved in the murder case from speaking publicly about it outside of court.

Typically, prosecutors' motions to dismiss don't go into great detail about why. Often, prosecutors say that they are seeking dismissals "in the interest of justice" or that they just can't make a case.

Dallas defense lawyer Chris Knox said that anytime an officer is indicted, "it places prosecutors in the precarious position when deciding whether to sponsor the officer's testimony at an unrelated trial."

Prosecutors could still call Guyger as a witness in cases. But her indictment for shooting Jean probably would come up.

Botham Jean (Instagram)

"It is entirely normal for the district attorney's office to be wary of calling that officer as a witness against another defendant," said Knox, who is not working on the Guyger case.

One traffic stop, four charges

Guyger was one of two officers who stopped a black Ford Crown Victoria on Jan. 25, 2018, according to an arrest warrant affidavit.

The affidavit says the Ford's driver, Thirley Lewis, didn't signal a left turn and police smelled marijuana coming from the vehicle. Officers also found a gun in the car.

Guyger searched the car and found a clear plastic bag with "suspected marijuana" on the front passenger floorboard, the affidavit says. She also found a baggie of "suspected crack cocaine" on the front passenger seat and arrested James Thomas, who was riding in the Crown Victoria.

In the weapons and marijuana cases against Lewis, Guyger was cited as the source of the information used by another officer to obtain an arrest warrant, according to court records. She is listed as a witness who had body camera footage of the arrest in the other cases.

Johnson, then the district attorney, asked a judge to dismiss a felony cocaine charge against Thomas in November, saying, "After further investigation, the State has decided not to proceed with prosecution."

In December, prosecutors asked to dismiss a misdemeanor marijuana case against Thomas from the same incident.

In that court record, prosecutors were more specific, asking the judge to dismiss the case because Guyger "has been indicted for murdering an innocent man in his own home and will not be sponsored at this time."

That dismissal also refers to a felony case another judge had already dismissed.

In January, after Creuzot took office, prosecutors asked another judge to dismiss a misdemeanor marijuana possession charge against Lewis. That motion also said prosecutors couldn't pursue the case because of the murder charge against Guyger.

"The testimony of the officer(s) was crucial to proving the case," the motion says. "Absent that testimony, the State cannot present a prima facie case to the Court or a jury and is forced to tender this motion seeking the dismissal of the cause."

John Fullinwider, co-founder of Mothers Against Police Brutality, said the dismissed cases are another example how police brutality affects the community.

"These cases illustrate how police brutality impacts legitimate policing," he said. "Officers like Guyger, who abuse their authority, in her case fatally, undercut the efforts of officers who are actually doing their jobs in a way that respects our Constitutional rights."