Arkansas teacher candidate arrested for killing married couple during state park hike.

Arkansas police have arrested 28-year-old Andrew James McGann, a teacher candidate, in connection with the murder of a married couple, Clinton David Brink and Cristen Amanda Brink, who were hiking with their two young daughters at Devil's Den State Park. The couple's daughters, aged 7 and 9, were unharmed. McGann was captured after a five-day search following public appeals for information. The motive for the killings remains undisclosed.