SOUTH LAKE TAHOE (AP) — A California police officer who was put on administrative leave more than a year ago has been arrested on federal corruption charges accusing him of tipping off narcotics traffickers to upcoming drug busts, tampering with witnesses and having sex with underage students at a Lake Tahoe high school. FBI agents arrested John "Johnny" Poland on Tuesday at the police station in South Lake Tahoe on five charges stemming from an investigation that began in March 2010 after he was observed associating with suspects tied to an alleged plot to murder a gang investigator on the police force. The nearly 3-yearlong probe uncovered allegations of Poland's misconduct dating to October 2003 when he allegedly engaged in sexual activity with a 17-year-old female student at South Lake Tahoe High School where he was assigned as a school resource officer from 2003-06.