Microsoft is looking into reports that some Windows Live customers may have gotten access to other users' information.

"Microsoft is investigating reports of a limited number of instances in which Windows Live customers may have access to other customers' accounts when accessing their account through mobile Web browser," the company said in a statement Tuesday. "Microsoft takes customers' privacy seriously, and immediately upon learning of these reports, we started an investigation."

The company added that it "will take appropriate action once we have completed the investigation."