JUBA (Reuters) - Nearly 100 civilians have been killed in Sudan's disputed Abyei region since the northern military seized it on May 21, an Abyei official said on Thursday. South Sudan is scheduled to break off into its own country on July 9, and the status of the fertile, oil-producing Abyei area has remained one of the most contentious issues in the countdown to independence. Khartoum sparked an intl outcry when it moved tanks and troops into Abyei's main town on May 21, the day after an attack on a convoy of northern soldiers and UN peacekeepers that was blamed on southern forces. "We are waiting for final confirmation with names, but the toll is close to 100 people, not more," Abyei chief administrator told Reuters.