Bombardier Inc. (TSX:BBD.B) has approached Alstom SA (ENXTPA:ALO) and Hitachi Ltd. (TSE:6501) to find a merger partner for its rail business as it struggles to contain costs that have eaten into margins, sources told Reuters. The company is working with Citigroup Inc. (NYSE:C) and UBS Group AG (SWX:UBSG) to strike a deal that could help create a rail champion to better compete with CRRC. It remains in active talks with Alstom, while also looking at Hitachi as another merger option, the sources said, requesting anonymity as the matter is confidential.

Bombardier, Alstom, Hitachi and Siemens all declined to comment. Discussions with Alstom began in July and became serious in September, one of the sources said.