1.   Such incidents occur periodically as local tribesmen have easy access to weapons.

2.   Such incidents occur periodically in the region, where local tribesmen have easy access to weapons.

3.   Tribesmen must have financial inducements from abroad to persist in their hostage-taking, he added pointedly.

4.   Yemeni tribesmen have released five Polish tourists, two women and three men, abducted a week ago, Polish foreign ministry spokesman Pawel Dobrowolski said Wednesday.