China has engaged in a decades-long campaign to insert and recruit allied researchers from the Los Alamos National Laboratory in New Mexico, according to a report from information security firm Strider Technologies.

The report asserted that between 1987 and 2021, at least 162 scientists who passed through the nuclear research lab returned and worked with the Chinese government.

FORMER CHINESE JUSTICE MINISTER SENTENCED TO DEATH FOR HELPING CRIMINALS, TAKING BRIBES

Of these, 15 were permanent staff members, many carrying very high levels of security clearances.

The scientists "returned to the [People's Republic of China] to support a variety of domestic research and development (R&D) programs," according to the report.

Los Alamos National Laboratory is seen in 1999

FILE - A sign greets visitors to the Los Alamos National Laboratory campus in Los Alamos, New Mexico.  (Joe Raedle/Newsmakers)

US MILITARY LEADERS WARN CHINA COULD MILITARIZE THE PORTS IT OWNS IN LATIN AMERICA

The assessment continues, "Of those fifteen, thirteen were recruited into PRC government talent programs; some were responsible for sponsoring visiting scholars and postdoctoral researchers from the PRC, and some received U.S. government funding for sensitive research."

Strider Technologies found that "at least one of these staff members held a U.S. Department of Energy (DOE) 'Q Clearance' allowing access to Top Secret Restricted Data and National Security Information."

CLICK HERE TO GET THE FOX NEWS APP 

The U.S. Department of Energy's Office of Inspector General said in 2015 that a lack of managerial oversight at the laboratory led to improper disclosures of sensitive information.

Los Alamos lab

The Los Alamos Laboratory and the town of Los Alamos, June 14, 1999. (Joe Raedle/Getty Images)

In 1999, scientist Wen Ho Lee was accused of mishandling nuclear weapons codes, but the government's case fell apart and ended with a plea bargain that freed the Taiwanese-born scientist. 

The next year, two computer hard drives with top-secret nuclear-related material disappeared, only to turn up mysteriously behind a copy machine.

The Associated Press contributed to this report.