By Laurence Frost
PARIS (Reuters) - Nissan <7201.T> and Daimler
The carmakers signed a memorandum of understanding last month to create the venture, according to the person, who asked not to be named because the plans are confidential.
Sources told Reuters last week that an outline deal between the companies would see Nissan build the next-generation Mercedes GLA offroader and all-new Infiniti cars at its Aguascalientes plant northeast of Guadalajara.
Neither carmaker would confirm the Mexico production plan.
Mercedes, Nissan and alliance partner Renault
Nissan announced plans in 2012 to build a first Infiniti model based on the current Mercedes compact car architecture. Production is due to start in Sunderland, northeast England next year.
(Additional reporting by Edward Taylor; Editing by Jane Barrett and Mark Potter)