An O'ahu distributor has voluntarily recalled an 11,000-pound shipment of frozen fish after federal investigators found salmonella while testing a parcel of tuna.

"Our main concern is safety," Edmund Choy, owner of Choyce Products, said in a news release. "We immediately issued a voluntary recall and confirmed that our customers do not have any ahi from that parcel in their inventory."

The recalled frozen fish is most commonly used in poke. The recall comes after more than 30 cases of the same strain of salmonella were reported on O'ahu from October to January, Department of Health spokesman Janice Okubo said. The common thread among the cases was poke, which uses uncooked fish.

Investigators from the U.S. Food and Drug Administration are testing samples at the more than 40 distributors of fish on the island, but so far no other recalls have been issued.

The Choyce Products tainted fish got to O'ahu in early December from a distributor in Indonesia. About half of the recalled fish has been accounted for and will be destroyed.