He says security forces where being extremely careful in launching the final raid because a suicide bomber was guarding the hostages in a corner of the building.
VOA: standard.2009.10.11
Zahir said four Nepalese Gurkha security guards guarding the IOM compound were also wounded in the attack.
Analysts say such a shutdown could cut production in Nigeria, Africa's largest oil producer, by one-quarter within weeks or sooner if security forces guarding the facilities sympathize with union demands.
They are uniformed and carry their service weapons in holsters, with duties that include monitoring school security cameras, guarding entrances and watching for intruders.