Narrative:

After deplaning in ZZZ the gate agent informed my first officer that a passenger had a lithium battery in his carry-on bag which had been placed in the baggage compartment. I'm guessing that it was a smart bag that was found by the baggage handlers when unloading. They took pictures and informed the gate agent. She told the first officer who then informed me about the situation. I talked to the agent who told me that the passenger said he 'forgot' about the battery. She forwarded her report to customer service.

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Original NASA ASRS Text

Title: Air Carrier Captain reported passenger gate checked bag containing lithium ion battery was transported in the cargo compartment in violation of HAZMAT regulations.

Narrative: After deplaning in ZZZ the gate agent informed my First Officer that a passenger had a lithium battery in his carry-on bag which had been placed in the baggage compartment. I'm guessing that it was a smart bag that was found by the baggage handlers when unloading. They took pictures and informed the gate agent. She told the First Officer who then informed me about the situation. I talked to the agent who told me that the passenger said he 'forgot' about the battery. She forwarded her report to customer service.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.