A teacher arrested in the murder of a married couple found stabbed to death on a trail in an Arkansas park was held without bond after a brief court appearance on Friday.

LITTLE ROCK, Ark. (AP) — 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.

A 28-year-old man has been arrested and charged with murder following the deaths of husband and wife Clinton and Cristen Brink. who were killed while out hiking with their two young daughters in Arkansas.