(Newser) – The sister of one of the fugitives accused of killing a security guard at a Family Dollar in Michigan last week has become the fourth family member to be charged in the case. Brya Bishop has been charged with tampering with evidence, lying to police investigating a violent crime, and being an accessory after the fact to a felon, CNN reports. Genesee County Prosecutor David Leyton says the 24-year-old is accused of interfering with efforts to arrest her brother, 23-year-old Ramonyea Bishop, and stepfather Larry Teague, 44. "We think she helped them escape," Leyton says. Her mother, 45-year-old Sharmel Teague, is already in custody.