The police say he carried visiting cards of some other official.
Kumar claims he is a PhD and always moved around in an SUV with a central government sticker.
The police say he had been under surveillance since September 20, when he contacted the Central Vigilance Commissioner, introduced himself as a Director in the PM's Office and asked about a job for an officer of the Defence Accounts Services.
The vigilance commissioner, suspicious of Kumar, contacted the PM's Office and learnt that there was no director of this name.
The police are also looking for a person from Hyderabad who is believed to have supplied Kumar with the fake visiting cards.
Kumar allegedly went into hiding in 2014 when the government had launched a campaign to catch touts and agents working in different ministries.
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