Chinese-made drones that may have been used by U.S. service members in Syria are now banned by the U.S. Army, according to a report.

“Cease all use, uninstall all DJI applications, remove all batteries/storage media from devices, and secure equipment for follow on direction,” reads the memo from Lt. Gen. Joseph H. Anderson, the Army’s deputy chief of staff for plans and operations. The memo was obtained by the publication Defense One, which said it was also confirmed by two Army officials.

According to the publication, the Army document cites “increased awareness of cyber vulnerabilities associated with DJI products.”

DJI-made drones have also been used on occasion by the U.S. Air Force in conjunction with other military technology. One was used last year in Nevada at a national security site during a research challenge, which involved an attack drone intercepting the DJI drone with a large net.

CNBC reached out to the Army, Air Force, and DJI for comment.