The man told officials that he used a "cancelled" ticket to enter the terminal. (Representational)

A US national was arrested at the Delhi airport today for allegedly using a fake ticket to enter the terminal area, a senior official said.

Kasi V Malla was arrested around 12.30 am. Security personnel found him roaming suspiciously in the terminal area and trying to leave the Terminal-3 (T3) building, the official said.

The man was stopped and questioned, as exiting the terminal area is not allowed under normal circumstances, he said.

The passenger told security officials that he used a "cancelled" ticket to enter the terminal area to see off his wife and children who were travelling to Zurich in Switzerland. The man has been arrested.