Russian bounties offered to Taliban-linked militants to kill coalition forces in Afghanistan are believed to have resulted in the deaths of several U.S. service members, according to intelligence gleaned from U.S. military interrogations of captured militants in recent months.

Several people familiar with the matter said it was unclear exactly how many Americans or coalition troops from other countries may have been killed or targeted under the program. U.S. forces in Afghanistan suffered a total of 10 deaths from hostile gunfire or improvised bombs in 2018, and 16 in 2019. Two have been killed this year. In each of those years, several service members were also killed by what are known as “green on blue” hostile incidents by Afghan security forces sometimes believed to have been infiltrated by the Taliban.

The intelligence was passed up from the U.S. Special Operations forces based in Afghanistan and led to a restricted high-level White House meeting in late March, the people said.