In an interview with Reuters at a Banorte event, Carlos Hank Gonzalez declined to discuss the details of the alliance with Caisse [CDPDA.UL] but said "it will be announced soon."

Gonzalez added that the fund will be 100 percent focused on infrastructure.

A representative for Caisse in Quebec declined to comment.

In March, the CEO of Banorte (>> Grupo Financiero Banorte SAB de CV) told Reuters that the bank was preparing to launch a $3 billion joint infrastructure fund with a North American partner, which he declined to name.

Caisse already has a partnership with the Mexican construction firm ICA (>> Empresas ICA SAB de CV) to operate highway projects.

Recently, the firm CKD Infraestructura informed the Mexican stock exchange it released $200 million in CKDs, a financial instrument used to invest in infrastructure projects in Mexico, and the firm identified Caisse as a potential co-investor.

Grupo Financiero Banorte operates the fourth-largest bank in Mexico, according to its assets, and is the biggest bank in the country controlled by Mexican shareholders.

(Reporting by Tomas Sarmiento; Editing by Bernard Orr)

By Tomas Sarmiento