Mexico's Finance and Tax Secretariat (SHCP) on Thursday announced that the 26 accounts had been seized. Diplomatic sources told Breitbart News that the probe is being personally overseen by UIF Director Santiago Nieto Castillo, who briefs Mexican President Andres Manuel Lopez Obrador directly. 

The SHCP’s Financial Intelligence Unit (UIF) tracked suspicious transactions beginning in October 2018 to determine the sources of funding for the caravans. The results reportedly pointed to some monies coming from the U.S., U.K., African nations, and throughout Central America. Diplomatic sources revealed the investigation is still developing since the case was prioritized Monday as tensions over tariffs escalated. -Breitbart

As part of Mexico's crackdown to avoid US tariffs, Mexican authorities also arrested two caravan organizers reportedly tied to the US-based group Pueblo Sin Fronteras, which helps migrants illegally cross into America. According to officials, the groups would demand money from some of the migrants. 

What's more, law enforcement sources revealed to Breitbart that the UIF investigation found four sanctioned accounts linked to human smuggling groups that are loyal to Mexican drug cartels in border towns. Two of the accounts were linked to Piedras Negras, which is tied to the Cartel Del Noreste faction of the Los Zetas, as well as an independent smuggler in the area. The two other accounts are believed to be tied to Gulf Cartel operators based in Reynosa, Tamaulipas.