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(CNN) —  

The Navy SEAL accused of fatally stabbing an injured person in Iraq texted a photo of a dead ISIS fighter and wrote, “good story behind this, got him with my hunting knife,” prosecutors said in court on Tuesday.

The opening statements marked the beginning of the military trial of Edward Gallagher, a special operations chief who is accused of premeditated murder. A jury of seven men was impaneled in a military courtroom in San Diego for the case.

The prosecutor, Lt. Brian John, said the jury will hear testimony from witnesses who saw Gallagher pull out a knife and stab an ISIS prisoner in the neck. Gallagher later tried to “systematically intimidate” other SEALs who would report him for his actions, John said.

But Gallagher’s defense attorney Tim Parlatore said there was no credible physical evidence for the murder charge against him. He said the witnesses all had “an admitted hatred towards Eddie.”

“This case is not about murder. It’s about mutiny,” he said. The other witnesses “didn’t want to get into the fight, Eddie wanted to get into the fight.”

Gallagher is accused of multiple violations of military law that took place while he was deployed in the Iraqi city of Mosul in 2017. If convicted of murder, Gallagher would face life in prison.

His case has garnered attention from President Donald Trump, and he has won support from US Rep. Duncan Hunter, a California Republican who served as an artillery officer during a 2004 tour in Falluja, Iraq.

In an interview with Barstool Sports two weeks ago, Hunter defended Gallagher and said his own unit “killed probably hundreds of civilians” in Falluja.

Gallagher’s alleged victim “might have been killed in a way that you don’t personally agree with, because you say it’s against the laws of war,” Hunter said. “As opposed to artillery killing civilians, women and children, because it’s kind of indiscriminate in a way. It’s not a sniper weapon, right. Which is worse?”

Defense attorney says Gallagher didn’t murder anyone

Special Operations Chief Eddie Gallagher is accused of killing an injured person while deployed in Mosul, Iraq in 2017.
Courtesy Andrea Gallagher
Special Operations Chief Eddie Gallagher is accused of killing an injured person while deployed in Mosul, Iraq in 2017.

According to a charge sheet from November, Gallagher stabbed “a wounded male person” in the neck and body with a knife while battling ISIS in Mosul. The sheet says he did so “with premeditation.”

According to a charge sheet from November, Gallagher stabbed “a wounded male person” in the neck and body with a knife while battling ISIS in Mosul. The sheet says he did so “with premeditation.”

Gallagher’s attorney has said the person was an ISIS combatant, and witnesses told investigators that the stabbing victim appeared to be about 15.

Gallagher also is accused, according to a charge sheet, of shooting at a male and female noncombatant and of posing for a photo next a corpse during his reenlistment ceremony. His defense team had said in a statement that the allegations were “a smear campaign full of lies,” CNN affiliate KSWB-TV reported.

Gallagher has pleaded not guilty, and a statement released by his defense team called the allegations “a smear campaign full of lies,” CNN affiliate KSWB-TV reported.

Gallagher is a highly decorated veteran who has served 19 years in the Navy, according to KSWB.

His attorney, Colby Vokey, told reporters in January that Gallagher didn’t murder anyone and that he and other special operators are asked to do unimaginable things on the battlefield.

“This is a travesty of justice and it needs to be righted,” Gallagher’s wife, Andrea, told CNN in January.

Separately, a Navy judge removed lead prosecutor Chris Czaplak from the case earlier this month.

In his ruling, the judge, Capt. Aaron Rugh, said the prosecution sent emails to the defense and a reporter that were embedded with email-tracking code, according to KSWB. The coding in the emails gave the prosecution the ability to track the recipients’ email activity.

The devices were ordered with Czaplak’s knowledge as part of a Naval Criminal Investigative Service probe into media leaks in the case. The defense argued that Czaplak was unfit to prosecute the case because future investigations into the legality of the email tracker could create a conflict of interest.

The defense argued that Czaplak was unfit to prosecute the case because future investigations into the legality of the email tracker could create a conflict of interest.

CNN’s Paul Vercammen, Nick Watt, Dakin Andone, Jason Kravarik and Devan Cole contributed to this report.