WASHINGTON — The Secret Service has sent home three of its agents who were in the Netherlands to provide security for President Obama’s trip there, according to senior law enforcement officials, citing “disciplinary reasons” in connection with the agents’ drinking.

One of the agents who was sent home was found passed out in a hallway, the officials said, adding that the agents were caught drinking before Mr. Obama arrived there this week for meetings with European allies.

A spokesman for the Secret Service declined to provide further details about the episode. The disclosure, first reported by The Washington Post, is the latest embarrassment for an agency whose agents’ behavior has been under scrutiny since April 2012, when several were caught with prostitutes in their hotel rooms during a presidential trip to Cartagena, Colombia.

After that scandal, the Secret Service imposed new guidelines and regulations in an attempt to crack down on agents’ behavior while they were traveling, particularly when they were abroad.