Federal criminal investigators confirmed this week they are looking into John Simpson, founder of an organization that partnered with the mother of one of the military servicemen killed on July 16.

Members of the Lance Corporal Skip Wells Foundation publicly accused Simpson two weeks ago of misappropriating funds. They said Simpson befriended Wells’ mother, Cathy Wells. She and Simpson held joint fundraising events, splitting the money between her foundation and his own, Marines and Mickey.

The leaders of the Wells foundation don’t believe Simpson used most of the the money for Marines and Mickey. They also accuse him of lying about his military record.

“I can confirm that [the Naval Criminal Investigative Service] is responding to complaints regarding financial practices of the charity ‘Marines and Mickey,'” NCIS Public Affairs Officer Ed Buice said in a statement. “If other individuals have similar concerns, NCIS would like to speak with them. Beyond that, NCIS does not discuss the details of ongoing investigations.”

Several foundation members said they contacted the FBI about Simpson, though FBI spokesman Stephen Emmett wrote in a statement last week, “It would be premature to say we are investigating.” Emmett said this week that status has not changed.

The Marines and Mickey website said the foundation sends Marines’ family members to Disney World or Disneyland. The organization also is supposed to fly families to boot camp graduations at the Marine Corps Recruit Depot Parris Island or the Marine Corps Recruit Depot San Diego.

But Jason Weeks, a co-chairman of the Wells foundation, said his group became suspicious of Simpson. He and others said Simpson was vague when he talked about his time in the military, though he told them he was a 20-year veteran of the U.S. Marine Corps Force Reconnaissance, an elite unit that gathers information on enemies.

Weeks said a military contact tipped him that Simpson didn’t actually serve in Force Recon. He said Simpson also refused to show Wells foundation members how he spent money he has raised with Marines and Mickey.