Heavy clashes erupt outside Yemen presidential palace

The roads were closed as a security measure after the presidential chief of staff was abducted in Sanaa last week.

Yemen described the unfolding events as a bid to seize power.

Sari added this was because the President wanted to introduce a new constitution without the approval of the Houthis.

Hadi was elected President in February 2012.. He was the only candidate on the ballot.

CNN