Ahmad Kassim, a senior official with the Free Syrian Army, said Prime Minister Riad Hijab defected to Jordan along with three other ministers. A Jordanian government official confirmed Hijab defected with his family but did not comment on the three other ministers. The Jordanian government official spoke on condition of anonymity, saying he was not allowed to make any public statements on the defection.
Hijab is the highest-level government official to defect since the uprising against Assad's authoritarian rule began 17 months ago. The other ministers' identities were not immediately known.
"Don't be scared. Defect from this criminal regime," said Mohammad Otari, who identified himself as a spokesman for Hijab. He spoke on Al-Jazeera TV, urging other Syrians to join the defecting ministers.
Otari said Hijab is now a "soldier" of the revolution and added that his defection was planned for more than two months. He said the minister was now in a safe place, adding that Hijab took the job two months ago because the regime gave him a choice: Be killed or accept the post.
Earlier Monday, Syrian state-run TV reported Hijab was fired from his post. A former agriculture minister, Hijab took office less than two months ago and was considered a loyalist in Assad's ruling Baath party.
Otari said Hijab is from eastern province of Deir el-Zour from the Sikhni tribe. He said Hijab defected along with 10 families who are his relatives, adding that some of them held government posts including in various ministries.
Halaby reported from Amman, Jordan.