An ISIS fighter who calls for jihad in a new online video was trained in counterterrorism tactics on American soil, in a program run by the United States, officials tell CNN.

The video features a former police commander from Tajikistan named Col. Gulmurod Khalimov. He appears in black ISIS garb with a sniper rifle and a bandolier of ammunition. He says in the video that he participated in programs on U.S. soil three times, at least one of which was in Louisiana.

The State Department has confirmed this claim.

“From 2003-2014 Colonel Khalimov participated in five counterterrorism training courses in the United States and in Tajikistan, through the Department of State’s Diplomatic Security/Anti-Terrorism Assistance program,” said spokeswoman Pooja Jhunjhunwala.

The program is intended to train candidates from participating countries in the latest counterterrorism tactics, so they can fight the very kind of militants that Khalimov has now joined.

A State Department official said Khalimov was trained in crisis response, tactical management of special events, tactical leadership training and related issues.

In the video, Khalimov says that what he saw during his training sessions turned him against his sponsors.

“Listen, you American pigs: I’ve been to America three times. I saw how you train soldiers to kill Muslims,” he says in Russian. “You taught your soldiers how to surround and attack, in order to exterminate Islam and Muslims.”

Then, in the most chilling part of the 10-minute video, he looks directly into the camera and says, “God willing, we will find your towns, we will come to your homes, and we will kill you.”

He then demonstrates his dexterity with a sniper rifle by blowing apart a tomato from a distance of perhaps 25 yards. The scene is played in slow motion.

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The American program in which Khalimov participated is designed to teach tactics used by police and military units against terrorists by countries that cooperate with the United States on security matters. But now experts are concerned that this defector has brought ISIS not only a propaganda victory, but also an insider’s knowledge of the playbook the United States is using in the fight against ISIS.

“That is a dangerous capability,” said former Army intelligence officer Michael Breen. “It’s never a good thing to have senior counterterrorism people become terrorists.”

“It sounds like he was involved in defending sensitive people and sensitive targets,” said Breen, who is now with the Truman Project in Washington. “He knows how to plan counterterrorism operations. So he knows how the people who protect a high-value target will be thinking; he knows how people who protect an embassy would be thinking.”

Former Army sniper Paul Scharre, now with the Center for a New American Security, said Khalimov could not only help train other ISIS fighters in tactics, but also serve as a recruiter for the group.

“They’re obviously trying to draw in recruits” with the video, he said.

War against ISIS: Successes and failures

Khalimov was an officer of the primary counterterrorism unit which responds to terrorist threats in Tajikistan, a State Department official said, so he and other members of his unit were recommended for the program by the Tajik government.

“All appropriate Leahy vetting was undertaken in advance of this training,” said spokeswoman Jhunjhunwala.

Scharre, who has served as a trainer of Afghan soldiers in Afghanistan, says there is always a risk that a trainee will turn against their American instructors.

But Breen, who has also participated in training sessions overseas, said building counterterrorism partners requires a necessary leap of faith. “There’s absolutely no way to beat an opponent like the Islamic State, without training a lot of people,” he said. “That’s a core of our strategy.”

Why ISIS is winning and how to stop it

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An ISIS fighter poses with spoils purportedly taken after capturing the Syrian town of al-Qaryatayn.

Smoke rises as Iraqi security forces bomb ISIS positions in the eastern suburbs of Ramadi, Iraq, on August 6.

Buildings reduced to piles of debris can be seen in the eastern suburbs of Ramadi on August 6.

The governor of the Asir region in Saudi Arabia, Prince Faisal bin Khaled bin Abdulaziz, left, visits a man who was wounded ina suicide bombing attack on a mosque in Abha, Saudi Arabia, on August 6. ISIS claimed responsibility for the explosion, which killed at least 13 people and injured nine others.

Saudi officials and investigators check the inside of the mosque on August 6.

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Iraqi counterterrorism forces patrol in Ramadi on April 18.

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Kurdish Peshmerga forces help Yazidis as they arrive at a medical center in Altun Kupri, Iraq, on April 8.

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Iraqi security forces launch a rocket against ISIS positions in Tikrit on Monday, March 30.

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Fighters from the Free Syrian Army and the Kurdish People's Protection Units join forces to fight ISIS in Kobani on Wednesday, November 19.

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Kurdish fighters walk to positions as they combat ISIS forces in Kobani on Sunday, October 19.

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Cundi Minaz, a female Kurdish fighter, is buried in a cemetery in the southeastern Turkish town of Suruc on Tuesday, October 14. Minaz was reportedly killed during clashes with ISIS militants in nearby Kobani.

Kiymet Ergun, a Syrian Kurd, celebrates in Mursitpinar, Turkey, after an airstrike by the U.S.-led coalition in Kobani on Monday, October 13.

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A elderly man is carried after crossing the Syria-Turkey border near Suruc on Saturday, September 20.

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Kurdish Peshmerga fighters fire at ISIS militant positions from their position on the top of Mount Zardak, east of Mosul, Iraq, on Tuesday, September 9.

Displaced Iraqis receive clothes from a charity at a refugee camp near Feeshkhabour, Iraq, on Tuesday, August 19.

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Children stand next to a burnt vehicle during clashes between Iraqi security forces and ISIS militants in Mosul on Tuesday, June 10.

The ISIS terror threat

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CNN’s Elise Labott and Bruce Conover contributed to this report