(Adds Canada regulator statement; updates shares)
March 31 (Reuters) - The U.S. Department of Justice said records management company Iron Mountain (NYSE:IRM) Inc IRM.N would have to divest some of its assets to get U.S. antitrust approval for its acquisition of Australian rival Recall Holdings Ltd REC.AX .
The companies will have to sell assets in 15 U.S. metropolitan areas, including Detroit, San Diego, Atlanta and Seattle to proceed with deal, the department said on Thursday.
A spokesman for Iron Mountain declined to comment on the DoJ statement.
Canada's Competition Bureau said late on Thursday that Iron Mountain had agreed to sell its records management facilities and customer contracts in six major Canadian cities to address the regulator's concerns. Holdings agreed to be acquired by Iron Mountain in June last year after the U.S. company raised its cash-and-stock offer to about $2.6 billion. Mountain said on Wednesday the deal had been approved by the Australian Competition and Consumer Commission and the UK's Competition and Markets Authority. Mountain shares closed about 1 percent higher at $33.91 on Thursday.