A high school teacher is accused of using his cell phone to engage in sexual conversations with a teenage student.
A 45-year-old substitute teacher has been arrested on suspicion of sending sexually explicit text messages and engaging in sexual conversations with a 17-year-old San Mateo High School student, a deputy district attorney said Wednesday.
Jacobsen is suspected of developing a relationship with the 17-year-old girl that consisted of hourlong phone-sex calls, hundreds of sexually explicit text messages and an in-person meeting in Foster City in which they had a lengthy sexual discussion, Chief Deputy District Attorney Steve Wagstaffe said.
After the girl reported the activities, Jacobsen was taken into custody and his cell phone was seized as evidence.
He pleaded not guilty to the charges on Tuesday and will return to court on Oct. 13 for a preliminary hearing.
Jacobsen posted $30,000 bail and was released from jail at about 11:20 p.m. Tuesday.