Andrew James McGann, 28, has been charged with two counts of capital murder in the killing Saturday of Clinton David Brink, 43, and Cristen Amanda Brink, 41. The judge ordered McGann to be held without bond at the Washington County Detention Center, assigned him a public defender and scheduled his arraignment for Aug. 25.

LITTLE ROCK, Ark. — A teacher admitted he fatally stabbed a couple he didn’t know who were hiking with two of their children in an Arkansas state park, authorities said Thursday, after a five-day search and hundreds of tips led to his arrest.

Andrew James McGann, of Springdale, Arkansas, was charged with two counts of capital murder in the killings of 43-year-old Clinton David Brink and his wife, 41-year-old Cristen Amanda Brink, Arkansas State Police said.