1.   Rebels sealed off the area on Monday, saying there had been clashes between the refugees and local residents.

2.   Rebels sealed off the area to foreign aid workers for nearly a week, making it impossible to bring in food or medicine.

3.   He said they needed know what happened during the five days that rebels sealed off camps to outsiders.

4.   Rebels sealed off the area to aid workers for nearly a week, making it impossible to bring in food or medicine.

5.   Rebels sealed off the area to foreign aid workers for nearly a week, making it impossible to bring in food or medicines.