Mexico is investigating footage of armed men claiming links to Mexican cartels and apparently present in Ukraine, Bloomberg reported.
President Claudia Sheinbaum said authorities would first establish whether the video is authentic, then examine how the men may have joined the conflict.
Neither the recording date nor the location is known, and their alleged cartel connections remain unverified.
The broader concern, Bloomberg reported, is that recruits could return to Latin America with drone combat skills that criminal and armed groups could use in local conflicts.
Cartels already operate surveillance drones along the US-Mexico border to support drug trafficking and migrant crossings.
Elsewhere in the country, residents have reported drone attacks on their homes that forced them to flee.
In Colombia, armed groups increasingly deploy drones against soldiers and police.
Foreign Recruits
The footage comes amid reports of Latin American nationals serving on both sides of the Russia-Ukraine war.
Up to 16,000 foreign volunteers from at least 72 countries serve in Ukraine’s armed forces, with Latin Americans accounting for nearly 40 percent.
Reports published last year identified Colombia as a major source of recruits for Ukraine, with Colombian fighters serving in several formations, including an assault unit within the 47th Separate Mechanized Brigade, and at least 348 reportedly killed in combat.
On the Russian side, recruitment has included nationals from Brazil, Colombia, Cuba, and Peru.
Amnesty International reported in September that offers of civilian employment had misled some foreigners before being placed in military service.
The human rights organization also described pressure on foreigners with expired visas or facing criminal accusations, who were offered enlistment as an alternative to detention or deportation.
Interviewees said their movements were severely restricted after they signed military contracts.
Brazilian recruits reported that authorities confiscated their passports and phones, while others said they prevented them from leaving military facilities.
A Brazilian IT professional identified as Pedro said to Amnesty that he went to Russia after accepting what he believed was a well-paid technology job, only to find himself in military service.
When he asked to leave, his commander threatened to imprison or kill him, he told Amnesty International.