"One of them was found drunk and passed out in a hotel hallway," the Post reported, citing three unnamed people familiar with the case.
The latest eye-raising incident recalls the April 2012 scandal involving Secret Service Agents and prostitutes in Cartagena, Colombia.
And in this case, "the alleged behavior would violate new Secret Service rules adopted" after the scandal in Colombia that involved agents drinking and bringing prostitutes to their hotel before Obama arrived in the Colombian Caribbean resort city, the Post reported.
Secret Service spokesman Ed Donovan confirmed the agency "did send three employees home for disciplinary reasons" and that they were put on administrative leave pending an investigation. Donovan declined to comment further, the Post added.