A Yokosuka Middle School teacher is in Japanese custody Friday after being arrested on suspicion of possessing and growing marijuana, a Yokosuka City Police spokesman said.

Daniel Haley was arrested on suspicion of violating the Cannabis Control Law on Wednesday, according to the spokesman. The police raided his off-base residence in Ogawa cho, Yokosuka City and found about a gram (about 0.04 ounce) of marijuana and a marijuana plant, the spokesman said.

According to Charles Steitz, spokesman for Department of Defense Dependents Schools Pacific, Haley, 37, has been a physical education teacher at the school for two years.

The police spokesman said police were given information that Haley was growing marijuana at home. Police would not comment on when and how they acquired the information.

“We are concerned with the recent incident involving a DODDS Pacific teacher and are cooperating fully with the local officials during the investigation process,” Steitz said. “We take this incident very seriously. We have directed leaders at the school to re-emphasize expected standards of behavior, both during and after school hours, through briefings and other means.”

Steitz said DODDS schools are dedicated to preserving good relations with the local community. “DODDS Pacific seeks to hire and maintain a staff dedicated to the highest professional, ethical and law-abiding standards. We will continue to do whatever is possible to ensure our teachers live up to the high standards we expect of them.”

The case was sent to the Yokohama District Public Prosecutor’s Office on Friday.

Juliana Gittler contributed to this story.