1.   Rebel forces have been infiltrating into the country.

2.   Croatian forces have infiltrated the buffer zone in eastern Slavonia, in one instance threatening a Russian U.N. observation post.

3.   Ivanovic insisted that no Yugoslav security forces had infiltrated the city.

4.   The arrests were made possible after security forces infiltrated the group, the Akhbar Al-Youm weekly quoted chief police spokesman Gen. Raouf el-Manawy as saying.

5.   Serb forces infiltrated the compound, UN officials said.