Federal investigators are asking more people to come forward in a Hawaii high school coaching abuse case, a sign the alleged harm may be far wider than first known.

• A former Moanalua wrestling coach, Sakaida, faces federal charges over child sexual abuse material.
• The FBI says he targeted underage athletes for more than a decade, starting in 2012.
• Moanalua only put him on leave last fall, after he was accused of dating an athlete.
• Warning signs go back years: in 2012, a parent said he texted wrestlers at 3 a.m. and kissed a 13-year-old.
• The gap between that first complaint and any action raises questions about how schools handled it.

Outlook: More victims are likely to surface as the FBI appeal spreads, and scrutiny will shift to why the earlier complaints went nowhere.