(SeaPRwire) –   Mexican President Claudia Sheinbaum stated on Monday that she would seek clarifications about the activities of U.S. and Mexican officials at the time of their deaths in a car accident in Mexico.

Sheinbaum noted that her administration would investigate the incident to confirm no laws were violated following Sunday’s fatalities, adding that state governments must obtain authorization from Mexico’s federal government to collaborate with U.S. and other foreign entities “as established by the Constitution,” according to The Associated Press.

The fatal incident—claiming the lives of two U.S. embassy staff members and two Chihuahua State Investigation Agency (AEI) personnel—occurred after a drug-related operation in Mexico.

“This was not an operation the security cabinet was aware of,” Sheinbaum told the AP. “We were not informed; it was a decision made by the Chihuahua government.”

In a Sunday statement, Chihuahua State Attorney General César Jáuregui Moreno announced the deaths “of State Investigation Agency members and two U.S. Embassy instructor officers, who died in an accident while returning from an operation to destroy clandestine laboratories in the municipality of Morelos,” per an English translation.

The attorney general indicated in another statement that no foreign agents were involved in the operation and that it was unrelated to the accident.

“To avoid speculation and misunderstandings surrounding the operation that led to the discovery of a drug lab in the community of El Pinal, Sierra de Chihuahua, State Attorney General César Jáuregui Moreno clarified that only State Investigation Agency (AEI) personnel and the Mexican Army participated in it,” the April 20 statement said, according to an English translation.

“By this, he rules out foreign involvement; however, he specified that U.S. instructors were present in the state and a neighboring community for other purposes, such as training in drone handling,” the attorney general’s office noted. “He stated that around 80 officers took part in the drug lab seizure—40 from AEI and another 40 from the Secretariat of National Defense (DEFENSA).”

Jáuregui Moreno said AEI Director Pedro Román Oseguera Cervantes “met with U.S. Embassy instructors who were in Polanco teaching a drone operation course” and “they had a Sunday morning flight from Chihuahua City and requested assistance to travel with the director’s convoy.”

“They boarded the vehicle at approximately 2 a.m., and the accident—where the vehicle veered off the road into a local ravine—claimed their lives,” Jáuregui Moreno stated, adding that “no foreign agents were ever involved in El Pinal.”

He emphasized there “were no U.S. agents in the operation to secure the narco-lab,” according to the AP.

The outlet reported that Mexico’s Security Cabinet confirmed the army and state prosecutor’s office carried out a joint effort over the weekend in Chihuahua targeting drug labs in Morelos, the same location.

U.S. Ambassador to Mexico Ronald Johnson wrote in a Sunday post on X: “We are deeply saddened by the tragic loss of two U.S. Embassy personnel, the Director of Chihuahua’s State Investigation Agency (AEI), and an AEI officer in this accident.”

“We honor their dedication and tireless efforts to confront one of the greatest challenges of our time. Our thoughts and prayers are with them and their loved ones. This tragedy is a solemn reminder of the risks faced by Mexican and U.S. officials dedicated to protecting our communities. It strengthens our resolve to continue their mission and advance our shared commitment to security and justice, to protect our people,” he added.

The U.S. State Department did not provide further comment to Digital on Tuesday.

The Associated Press contributed to this report