Officials said the incident was reported from the IGI airport station at about 2:45 PM when a CISF official spotted the unattended bag at the x-ray baggage scanner.
He immediately informed his superiors and a bomb detection and disposal team was called in.
However, nothing suspicious was found in the bag and a cash of Rs 1.15 lakh, a laptop and a cheque book were recovered from it, they said.
The bomb alert was called off after few minutes, they said.
"After sometime, a Patna-based commuter came back to claim the bag. He said he had forgotten it on the x-ray machine as he was in a hurry. The bag was handed over to him after checking the bona fides," they added.