A disgruntled former employee has shot two foreign aid workers in the Somali capital, Mogadishu, killing at least one and wounding another.

Officials say the shooting occurred Thursday at the offices of the aid group Doctors Without Borders (MSF).

The nationalities of the victims were not released.

Police say the gunman, a Somali national, worked as a logistics coordinator with the agency. Reuters quotes a police official as saying he was taken into custody.

The shooting comes less than a week after three aid workers with the World Food Program were shot and killed in the central Hiran region of Somalia.