NEW : Call to a tip hot line led to the arrests , ATF says . NEW : Dallas , Texas ( CNN ) -- Source : Evidence linked to one of the suspects through DNA . Comment: Men are suspects in nine other church fires in east Texas , authorities say .
NEW : Call to a tip hot line led to the arrests , ATF says . NEW : Source : Evidence linked to one of the suspects through DNA . Comment: Men are suspects in nine other church fires in east Texas , authorities say .