The Navy is investigating several sailors stationed in Japan for using and selling drugs, 7th Fleet officials confirmed Friday.

Cmdr. Clayton Doss, a 7th Fleet spokesman, declined to answer specific questions regarding the investigation, citing its ongoing nature.

Naval Criminal Investigative Service spokesman Ed Buice said the sailors were based on the Japan-based carrier Ronald Reagan but declined to comment further due to the open investigation.

The Wall Street Journal broke the story Friday afternoon and reported that at least a dozen sailors were being investigated for buying, selling and using the drugs, which included LSD and ecstasy.

The Navy is looking into whether sailors bought or sold the drugs online, and if they were selling the drugs to locals, the Journal reported.

“The Navy has zero tolerance for drug abuse and takes all allegations involving misconduct of our Sailors, Navy civilians and family members very seriously,” Doss said in an email.