Video: Alleged 3rd 'Gate-Crasher' Enters White House

WASHINGTON, Jan. 5, 2010— -- A third man alleged to have crashed a State Dinner in November appears on video to be seen entering the White House through the front door, just minutes before the guest of honor, Indian Prime Minister Monmohan Singh, walked through the same entrance.

The suspect, first identified by the Washington Post as Carlos Allen and confirmed to ABC News by government sources, is seen in footage from the event emerging from a van that carried Indian business leaders from a hotel to the White House.

Allen has denied attending the state dinner, saying repeatedly in an interview with Politico, "I did not attend the state dinner."

On Monday the U.S. Secret Service issued a statement announcing the existence of a third party crasher, in addition to Tareq and Michaele Salahi. Allen did not respond to attempts by ABC News to reach him.

"The subject traveled from a local hotel where the official Indian delegation was staying, and arrived at the dinner with the group, which was under the responsibility of the Department of State," a statement from the U.S. Secret Service reads.

Sources tell ABC News the D.C.-area man met the Indian delegation at the Willard Hotel, where they went through a magnetometer security screening before boarding vans to the White House. Upon approaching the White House gate, Secret Service personnel then waved through the delegation's van, assuming everyone inside had been cleared and screened to attend.

"They clearly are not following their basic protocol in that you cannot let anyone in a controlled space, particularly with the president, without being cleared," former FBI special agent Brad Garrett told ABC News.

The Secret Service says that "there is nothing to indicate that this individual went through the receiving line" or had contact with the Obamas, unlike the Salahis, who famously shook hands with the president.