Police in Arkansas arrested Andrew James McGann, 28, in the murders of a couple who were walking with their daughters at Devil's Den State Park. The two girls managed to escape. CBS News' Omar Villafranca reports.

James Andrew McGann, 28, was arrested at 4:57 p.m. local time on July 30 at a business in Springdale, Arkansas, state police said.

Arkansas State Police arrested James Andrew McGann of Springdale and charged him with two counts of capital murder. Police did not mention a possible motive.