ADEN - Yemeni tribesmen kidnapped five Syrian and four Yemeni truck drivers on Monday to pressure the government to release their jailed kinsmen, a security source said.

Yemen is trying to restore law and order after an uprising which forced veteran leader Ali Abdullah Saleh from office in February.

The Sabbeiha tribesmen seized the nine truck drivers as they passed through Lahej province in south Yemen, while travelling from Aden to Hodayda on the Red Sea coast, said the source, a security official in Lahej.

The captors are demanding the release of 13 tribesmen arrested after clashes with security forces over land disputes.

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