A teacher arrested for allegedly murdering a couple in Arkansas as they hiked with their two young daughters over the weekend admitted he had done it.

Clinton David Brink, 43, and Cristen Amanda Brink, 41, were found dead Saturday at the park in Washington County, police said. They were hiking with their daughters, ages 7 and 9.

Police late Wednesday announced that Andrew James McGann, 28, of Springdale had been arrested on two counts of capital murder in the killings. He was taken into custody at 4:57 p.m. at a business in Springdale, the Arkansas State Police said in a news release.