almotamar.net - Security sources mentioned Sunday that some security forces arrested Sunday one of the former employees at the Oil Company at the same moment when he threw a hand grenade at the building and transferred him to concerned authorities for interrogation and to know complications of the incident.

A former employee at the Oil Company has earlier Sunday threw a hand grenade at the building of the company located in the capital Sana'a but it did not result in any casualties or material damage.