Minister of State for Civil Aviation Jayant Sinha also said that the role of employees working at the airport "cannot be ruled out".
"The theft cases reported/registered at Delhi airport during 2016 and 2017 (till November 2017) are 34 and 31 respectively," he said in response to a question in Rajya Sabha.
He added that such incidents are a law and order issue and complaints are lodged with the local police.
However, aviation security watchdog, the Bureau of Civil Aviation Security (BCAS), has taken a slew of measures to check incidents of theft, including setting up of help-desks by the CISF to enable passengers to register complaints about missing baggage, frisking of ground handling staff and deployment of airline security staff around the cargo-hold area of the airline.