While the officials were verifying the documents of passengers bound from Singapore by Indigo airlines, they grilled a passenger who was later identified as Prakash Vel (38) from Musiri in Tiruchy, because of suspicious behaviour.

Later, he was found to be travelling with a fake passport. Subsequently, he was taken to the immigration officer Gomathy, who verified the passport and found it altered.

Later, he was handed over to the Airport police, who arrested him. Further inquiry is on.