A physical education teacher at Saint Mary's Academy in Englewood was arrested this week at school, accused of having a sexual relationship with a 13-year-old female student in California.Abigail Anne Holloway, 33, was taken into custody Thursday afternoon by Cherry Hills Village police officers acting on a California arrest warrant.Sgt. Patrick Weathers took her to jail and told 7news she was very calm and quiet and made no statements.According to police in California, Holloway had a sexual relationship with the student when she was a PE teacher at King's Academy, a Christian prep school in Sunnyvale, Calif. The sexual relationship began in 2001, when the student was 13, and "continued for several years," said Sunnyvale Police Capt. Doug Moretto.Moretto did not say if the relationship's end coincided with Holloway's departure of King's Academy in 2003.Investigators said they became aware of the alleged abuse in December and are still trying to determine if there are other children who may have been victimized by Holloway, either at King's Academy or other Santa Clara County schools where she worked as a teacher from 2003 to 2005.Investigators believe Holloway left California for Colorado in 2005, Moretto said.She began teaching at St. Mary's Academy in fall 2008. She was a PE teacher and volleyball coach at St. Mary's, a co-ed private school for grades K-8 and all-girls high school.Leslie Burton, a spokeswoman for the Cherry Hills Police Department, said there are no known victims at St. Mary's or any other local victims but police officers "are aggressively pursuing the leads."Burton said officers contacted Holloway Thursday and after interrogating her for some time, she was taken into custody. It's not known if students witnessed her arrest.Holloway faces multiple charges of child abuse. She was booked into the Arapahoe County Detention Facility, but wll be transported to Santa Clara County in California to await judicial proceedings. Moretto said he expects Holloway to be in California sometime next week since it does not appear she is fighting her extradition.Holloway said because of the sensitive nature of the police investigation, officers couldn't look specifically into where she has taught."Now that she is in custody, we will back track and tighten up her employment history," Moretto said.St. Mary's Academy president Deirdre Cryor said that Holloway was hired in August following a "rigorous hiring process," including reference and background checks. Watch 7NEWS at 5 p.m. for more on this story.