A San Jose martial arts instructor was arrested this month for allegedly possessing media depicting sexual abuse of children.

The San Jose Police Department said July 18 that 48-year-old Adrian Walter was arrested on July 9 after an investigation by the department’s Internet Crimes Against Children (ICAC) and Child Exploitation Detail (CED) Task Force allegedly found he had downloaded sexually abusive media onto the computer at his San Jose residence.

Walter was listed as an instructor at Seibu Ryu San Jose, which teaches Japanese swordsmanship, as of Sunday. The classes are held at Los Gatos Ballet, in downtown Los Gatos, according to the school’s Website, but the two entities are unaffiliated.

A request for comment sent through the school’s Website was not immediately returned July 20.

Walter was also being investigated for potentially chatting with underage girls online. The FBI assisted with the investigation, according to the San Jose Police Department.

Walter was booked into Santa Clara County Main Jail on allegations of possession of child sexual abuse material.

Police asked anyone with information about the case to contact SJPD detective Simonini at 4458@sanjoseca.gov or (408) 277-4102. Tips can be left anonymously by calling Silicon Valley Crime Stoppers at (408) 947-STOP, or by going to www.siliconvalleycrimestoppers.org.