U.S. federal prosecutors have opened preliminary criminal investigations into Colombian President Gustavo Petro over alleged links to drug traffickers and possible illicit financing of his 2022 campaign, according to a report by The New York Times.

The previously undisclosed probes are being conducted by federal prosecutors in Manhattan and Brooklyn and involve specialists in international narcotics trafficking, as well as agents from the Drug Enforcement Administration and Homeland Security Investigations, the newspaper said, citing people familiar with the matter.

Investigators are examining, among other issues, whether Petro held meetings with individuals connected to drug trafficking networks and whether his presidential campaign solicited or received donations from such actors. The two investigations are being carried out independently and remain in their early stages, with no certainty that they will lead to formal criminal charges.

There is no indication that the White House played any role in launching the investigations, according to the report. However, the inquiries emerge in a broader context of heightened tensions and fluctuating diplomacy between Bogotá and Washington.

Relations between Petro and U.S. President Donald Trump have been volatile, marked by sharp public exchanges, threats of tariffs that were never implemented, and the temporary revocation of Petro’s U.S. visa. Trump has repeatedly accused Petro of failing to curb narcotics production and has described him in highly critical terms, while Petro has denounced what he characterises as political pressure and interference.

The U.S. Treasury Department last year imposed sanctions on Petro, members of his family and senior officials, including Interior Minister Armando Benedetti, alleging links to narcotics activity. The measures, which included asset freezes and travel restrictions, were justified by Washington on the grounds that cocaine production in Colombia had reached record levels and that the government had offered concessions to armed groups involved in trafficking.

Petro has rejected those claims, insisting that his administration has strengthened seizures of cocaine and slowed the rate of expansion of coca cultivation. He has also denied any knowledge of illicit funds entering his campaign, dismissing the allegations as politically motivated attacks.

Colombia’s Attorney General  is examining charges that Petro’s son – Nicolás Petro – received money from individuals linked to illicit activities during the 2022 campaign. While his son acknowledged receiving funds that were not reported, no criminal charges have been filed against the president himself, and Petro has maintained he was unaware of the campaign “donations”.

According to the NYT, the U.S. investigations are taking place amid a broader strategy in which Washington has increasingly used legal and judicial tools to advance foreign policy objectives. Analysts say such actions could serve as leverage in bilateral relations or influence political dynamics in allied countries.

The timing of the probes is particularly sensitive, as Colombia prepares for presidential elections on May 31, with a potential runoff in June. Petro, the country’s first leftist president, is constitutionally barred from seeking re-election but has actively backed his political successor with hardleftist Iván Cepeda.

The allegations could reverberate through the electoral campaign, where relations with the United States remain a central issue. Candidates on the right have emphasised the importance of maintaining close ties with Washington, while figures on the left have framed U.S. actions as a challenge to Colombia’s sovereignty.

Despite months of tensions, diplomatic relations between the two countries have shown signs of stabilisation in recent weeks. Petro and Trump held a bilateral meeting at the White House earlier this year, which both sides described as constructive, and officials have since sought to rebuild communication channels.

Even so, uncertainty persists over the trajectory of the relationship, particularly as Washington continues to prioritise counternarcotics cooperation with Colombia, historically one of its closest partners in the region.

Petro has consistently denied any links to drug trafficking and has pointed to his government’s security strategy, which includes negotiations with armed groups and efforts to reduce violence, as evidence of a broader approach to the drug trade.

The start of U.S. investigations add a new layer of complexity to an already fraught political and diplomatic landscape, with potential implications not only for Petro’s post-presidential future but for Colombia’s ties with its most important security ally.

Colombian authorities on Wednesday arrested Ángel Esteban Aguilar Morales, alias “Lobo Menor”, an alleged senior figure in the Ecuadorian criminal group Los Lobos and suspected intellectual author behind the 2023 assassination of Ecuadorian presidential candidate Fernando Villavicencio.

The arrest took place at El Dorado International Airport, where Aguilar Morales arrived on a commercial flight from Mexico, according to Colombia’s migration authority.

Officials said the suspect attempted to evade detection using false identification as a Colombian citizen, but biometric verification and international intelligence-sharing mechanisms exposed his true identity. He was detained under an Interpol red notice and handed over to judicial authorities pending extradition proceedings.

Aguilar Morales is considered a high-ranking member of Los Lobos, an Ecuador-based criminal organization linked to narcotrafficking, contract killings, illegal mining, and broader transnational crime. Authorities allege he played a central role in planning the killing of Villavicencio, whose assassination during the 2023 campaign sent shockwaves across the region.

The arrest comes at a delicate moment in bilateral relations. Colombia and Ecuador are this week attempting to defuse a growing diplomatic and security crisis following the discovery of an unexploded device inside Colombian territory near the border between the departments of Nariño and Putumayo. The incident has triggered sharp exchanges between the governments of President Gustavo Petro and Ecuador’s leadership, amid mutual accusations over cross-border security threats.

Colombia’s migration chief Gloria Esperanza Arriero López said the capture underscores the country’s determination to confront transnational criminal networks, particularly as tensions with Ecuador highlight the porous and contested nature of the shared border.

“This result demonstrates that Colombia has strong institutions and coordinated security forces working to close the space for criminal organizations, regardless of their origin,” Arriero said.

Colombian officials said Aguilar Morales had been under surveillance following intelligence tracking his movements through Medellín and Itagüí before traveling to Mexico. Authorities credited close cooperation with Mexican counterparts for locating and intercepting him as part of a multinational operation referred to by Petro as “Jericó.”

Petro described the suspect as one of the most significant figures linked to the Villavicencio assassination and alleged ties to dissident Colombian armed factions, including networks associated with “Iván Mordisco,” as well as Mexican cartels — evidence, he said, of the expanding integration of regional criminal economies.

According to investigators, Aguilar Morales had previously been sentenced in Ecuador to 20 years in prison for murder in 2013, but was granted conditional release in 2022 after serving half his sentence. Authorities allege he used falsified documents to meet legal reporting requirements while continuing criminal operations across borders.

The arrest marks a major development in the Villavicencio case and comes as Ecuador grapples with escalating violence linked to organized crime and drug trafficking routes. The slain candidate had campaigned on an anti-corruption platform and vowed to dismantle criminal networks, placing him squarely in their crosshairs.

Colombian authorities said the capture also demonstrates the importance of trilateral coordination between Colombia, Ecuador and Mexico in dismantling organized crime structures. Aguilar Morales is expected to face extradition as Ecuador seeks to prosecute those responsible for orchestrating the assassination.

The timing of the arrest — against the backdrop of rising diplomatic tensions and border security concerns — is likely to reinforce calls for deeper regional cooperation to address increasingly interconnected criminal threats operating across the Andes.