WASHINGTON — The Pentagon’s watchdog found that Defense Secretary Pete Hegseth put U.S. personnel and their mission at risk when he used the Signal messaging app to convey sensitive information about a military strike against Yemen’s Houthi militants, two people familiar with the findings said Wednesday.

Hegseth, however, has the ability to declassify material and the report did not find he did so improperly, according to one of the people familiar with the findings who spoke on condition of anonymity to discuss the information. That person also said the report concluded that Hegseth violated Pentagon policy by using his personal device for official business and it recommended better training for all Pentagon officials.

Hegseth declined to sit for an interview with the Pentagon’s inspector general but provided a written statement, that person said. The defense secretary asserted that he was permitted to declassify information as he saw fit and only communicated details he thought would not endanger the mission.

The initial findings ramp up the pressure on the former Fox News Channel host after lawmakers had called for the independent inquiry into his use of the commercially available app. Lawmakers also just opened investigations into a news report that a follow-up strike on an alleged drug-smuggling boat in the Caribbean Sea in September killed survivors after Hegseth issued a verbal order to “kill everybody.”

Hegseth defended the strike as emerging in the “fog of war,” saying he didn’t see any survivors but also “didn’t stick around” for the rest of the mission and that the admiral in charge “made the right call” in ordering the second strike. He also did not admit fault following the revelations that he discussed sensitive military plans on Signal, asserting that the information was unclassified.

In at least two separate Signal chats, Hegseth provided the exact timings of warplane launches and when bombs would drop — before the men and women carrying out those attacks on behalf of the United States were airborne.

Hegseth’s use of the app came to light when a journalist, Jeffrey Goldberg of The Atlantic, was inadvertently added to a Signal text chain by then-national security adviser Mike Waltz. It included Vice President JD Vance, Secretary of State Marco Rubio, Director of National Intelligence Tulsi Gabbard and others, brought together to discuss March 15 military operations against the Iran-backed Houthis.

Hegseth had created another Signal chat with 13 people that included his wife and brother where he shared similar details of the same strike, The Associated Press reported.

Signal is encrypted but is not authorized for carrying classified information and is not part of the Pentagon’s secure communications network.

Hegseth previously has said none of the information shared in the chats was classified. Multiple current and former military officials have told the AP there was no way details with that specificity, especially before a strike took place, would have been OK to share on an unsecured device.

The review was delivered to lawmakers, who were able to review the report in a classified facility at the Capitol. A partially redacted version of the report was expected to be released publicly later this week.