All Nippon Airways has fired a pilot who allegedly stole flight manuals that were subsequently sold on an Internet auction site, the company said Tuesday.

Kosuke Yasue, 42, was dismissed Monday on disciplinary grounds, following his Aug. 30 arrest on suspicion of stealing six manuals, including one for Boeing B747-400s, in late January from the bookshelf in a study room used by ANA crew members at Tokyo's Haneda airport.

Yasue has admitted to committing the theft and said he sold the manuals to a dealer in airline-related goods, who resold them on the Internet, according to police.

ANA also reprimanded two of Yasue's superiors.

After the case came to light, ANA reviewed its security policy and decided crew members must lock the bookshelf when they leave the room and that it would periodically check the number of manuals.