(By Lisa Hammersly, Franco Ordoñez and Fred Clasen-Kelly, Staff Writers) Police and the N.C. medical examiner's office said Friday they still believe the 1996 death of a Gaston County infant was homicide and will keep investigating, even after District Attorney Locke Bell dismissed charges Thursday against the baby's mother. Bell said newly discovered evidence showed Patricia Payne is innocent and could not have killed the baby.