Authorities are following up on a barrage of leads related to the death of a teenage girl found dead Friday night on the shoreline of Lake Lanier. “We do anticipate more leads coming in through the week,” said Sgt. Kiley Sargent, Hall County Sheriff’s Office spokesman, on Sunday. “Kids tend to talk and we hope that as people discuss this — parents and whatnot — that somebody will come forward with some real good evidence that could break the case for us,” Sargent said.