Japan’s Isuzu Motors Ltd. said Thursday that it is considering a set up in a joint venture to produce diesel engines with Toyota Motor Corp. as part of the tie-up which was announced by the two firms last year.The truck maker and the world’s number one car maker have been discussing details of their alliance in development and production of diesel engines since they formed the tie-up.

An Isuzu spokesman said that putting up a joint production venture is one option which the two auto makers are looking at. However, they are also considering other options.

The latest comments were aired after Isuzu said last December that building a new diesel engine plant with Toyota was one option. The Isuzu spokesman said that the two auto makers may be open for the details of their alliance by the end of August.