Colombian President Gustavo Petro on Monday accused Ecuador of conducting a possible bombing on the Colombian side of the two countries' shared border, where illegal drug trafficking groups operate, warning that he is awaiting the outcome of an investigation to avoid "going to war."

The left-wing leader, who is currently engaged in a trade dispute with Ecuadorian President Daniel Noboa, stated that his government holds evidence of an attack involving a "bomb" dropped from an aircraft near the border line.

"They are bombing us from Ecuador, and it is not the illegal armed groups," Petro said during a televised meeting with members of his cabinet.

The Colombian president added that he had asked U.S. President Donald Trump to "act" in response to the alleged bombing. "I asked him to call the president of Ecuador because we do not want to go to war," he added, without specifying the date on which the request was made.

Petro did not clarify when the alleged attack took place, stating only that it is under investigation in order to "make decisions."

Colombia and Ecuador have been engaged in a trade war since February, when Noboa imposed tariffs on Colombian goods, accusing Petro of failing to make sufficient efforts to combat drug trafficking along the border. Petro responded in kind, and despite various diplomatic efforts, the crisis has persisted.

Ecuadorian forces launched a two-week anti-narcotics offensive on Sunday with U.S. support. Noboa maintains close ties with Washington, and Ecuador is part of the so-called "Shield of the Americas," a recently established alliance of 17 nations designed to address regional security threats.

Colombia is not part of that agreement, announced by Trump, who shifted from an adversarial stance toward Petro to a more conciliatory one following a meeting at the White House on February 3.