The authorities arrested on Saturday four suspects in the attack on a bus carrying political security personnel in Shamlan district, Sana'a, that left one dead and 10 others injured, four in critical condition, a security source said.

The suspects were arrested at the Ayah roundabout, the source said but give no more information.

Armed people attacked at 6:00 am the bus while transporting the personnel to their workplaces.

Conflicting reports surfaced following the attack, with some noting the bus came under a shower of bullets, and others saying the attackers bombed it.

None has claimed responsibility for the attack yet.

Separately, the Interior Ministry circulated today the pictures of eight criminals whom it said are most wanted on charges of harming the public security and interest.

It urged the people to cooperate with the security authorities and provide any information that could lead to the arrest of the suspects.