The bodies of four Kenyans humanitarian workers who were killed in South Sudan last month have arrived in Nairobi on Saturday, according to Kenyan media.

The four were working for grassroots empowerment and development organisation, a non-governmental organisation funded by UNICEF.

South Sudan government said the four Kenyan nationals were among six humanitarian workers killed as they travelled to their base in Pibor town, northeast of the capital Juba.

Reportedly, gunmen stopped them ransacked the vehicles and shot them dead.

South Sudan’s government and rebels led by former vice first president Riek Machar have denied killing the workers.

Photo: UNMISS and CTSAMM assessment team at the scene where six aid workers were killed (UNMISS/Isaac Billy)