South Lake Tahoe police officer John "Johnny" Poland allegedly used his position of power to groom teenage girls for sex and provide sensitive police information to people connected to gang members, according to a criminal complaint filed this week. And when the police officer looked like he might get caught, he told his sexual partners to get rid of the evidence, according to the FBI.Poland, 44, was arrested at the South Lake Tahoe Police Department about 10 a.m. Wednesday while picking up paperwork, according to Police Chief Brian Uhler.FBI Agent Chris Campion filed a 12-page criminal complaint against Poland on …