ROCKLIN (CBS13) – A former Placer County high school teacher accused of having a sexual relationship with a student is back in jail.

Matthew Yamamoto was booked into the Placer County Jail Monday after a court hearing.

According to the Placer Herald, Yamamoto violated a restraining order by having near daily contact with one of the alleged victims.

The former Whitney High School physics teacher was first arrested in September.

He’s facing several charges including molestation.