A brief cease-fire between Thailand and Cambodia has broken down, shattering hopes for a quick end to the border conflict as the two sides exchanged fire for an eighth day. Field commanders agreed to the truce in a meeting at the disputed border on Thursday. But Cambodian Colonel Suos Sothea said the Thai army fired artillery shells into Cambodia again on Friday and small arms fire crackled anew around the Ta Krabey temple, which lies in a disputed zone along the frontier. "We cannot trust the Thais," he said. "Yesterday they said they'd stop fighting and now they are attacking us again." The death toll since the clashes has risen to 16.