A manhunt is underway for two inmates who escaped an Arkansas detention center this week, including a capital murder suspect.

Noah Roush, 22, and Jatonia Bryant, 23, were discovered to be missing from the Dub Brassell Adult Detention Center in Pine Bluff, Arkansas, Monday morning, the Jefferson County Sheriff’s Office said in statement. Pine Bluff is located about 40 miles southeast of Little Rock.

The inmates were believed to have escaped within 48 hours before they were noticed to be missing. It’s not clear how they managed to escape.