Mexico City - Mexican soldiers yesterday killed 11 Marxist rebels holed up in a house in a six-hour gun battle , the bloodiest battle in Mexico in nearly two years, the Defence Ministry said. An army patrol found the popular Revolutionary Army (EPR) in a school in the remote town of Ayutla, deep in the mountains of Guerrero sate 170 miles south of Mexico City,. The soldier repeatedly ordered the rebels to lay down their arms but they refused.