Authorities in Arkansas have arrested a man in connection with the fatal attack on a married couple who were hiking with their two young daughters, aged 7 and 9, at Devil's Den State Park. The couple, identified as Clinton and Cristen Amanda Brink, were found dead on a trail in the park. Local officials released a composite sketch of the primary suspect prior to the arrest. The suspect, who has been charged in the killings, is reported to be a teacher hired in Arkansas. The children were unharmed in the incident. Law enforcement continues to provide updates on the investigation.