Investigators with the Los Angeles Police Department's Topanga Division said that during the course of the investigation they learned that administrator Robert Nagai "had an ongoing inappropriate relationship with a former student."
The Chatsworth resident was arrested about 6:20 p.m. Aug. 2 and booked into the Van Nuys Jail. He was released the following day after posting $75,000 bail.
Nagai is an assistant operations director with the district's Educational Services Center West. He previously was an assistant principal at Hale Middle School in Woodland Hills, serving in that role from September 2005 to November 2011 according to his LinkedIn profile.
Online district records indicate Nagai served as a coordinator for a district "Sexual Misconduct Training" session in February this year aimed at other district administrators.
LAUSD Superintendent John Deasy said Monday that the district was advised of the arrest over the weekend and is cooperating with the police department. He said Nagai has been suspended from his position and Deasy is recommending dismissal, but he declined to comment further.
According to the state Department of Teacher Credentialing website, Nagai began working as a substitute teacher in 1987 and got his full-time credential two years later.
Deasy said Nagai was accused of misconduct by a female student in 1999 while working as a substitute. He was investigated and cleared by the LAPD, the City Attorney's Office and the California Commission on Teacher Credentialing, the superintendent said.
Nagai could not be reached for comment.
LAUSD general counsel Dave Holmquist said the district has informed parents at Hale of the arrest.
"We have been working with and cooperating fully with the Los Angeles Police Department since they brought these allegations to our attention late last Friday," Holmquist said in a written statement. "Although we have every indication that this was an isolated incident, we have issued a notice to parents at Hale Middle School about the arrest. Our top priority is ensuring students are able to achieve academic success, which requires a safe learning environment. We are all impacted when these sorts of incidents occur."
Police say they do not have any indications of additional victims, but asked anyone with information to contact Topanga Area Detective F. Avila at 818-756-3375. After-hours or on weekends, calls may be directed to 1-877-LAPD-24-7 (527-3247). Callers may also text "CRIMES" with a cell phone or log on to lapdonline.org and click on "Web Tips." When using a cell phone, all messages should begin with "LAPD." Tipsters may remain anonymous.