Mexican President Enrique Pena Nieto and several members of his Cabinet experienced severe eye irritation after attending an event in the central state of Queretaro last week, the president’s office said in a statement on Sunday evening.
Pena Nieto and other senior officials required medical attention after attending the inauguration of the National Center of Aeronautic Technology in the colonial-era city of Colon on Friday, the statement said.
It was unclear what caused the incident but the Health Ministry was investigating, the president’s office said.
Some officials had reduced their public appearances as they recovered but Pena Nieto was expected to continue with his normal schedule.
In addition to Pena Nieto, among those affected were Defence Minister Salvador Cienfuegos, Finance Minister José Antonio González Anaya, Agriculture Minister José Calzada and Environment Minister Rafael Pacchiano.