FACTBOX-Security developments in Afghanistan, July 6

July 6 (Reuters) - Following are security developments in Afghanistan at 0630 GMT on Saturday.

HELMAND - A British soldier was killed in an explosion near Gereshk in southern Helmand province on Saturday during the latest phase of a major British military operation in the area, Britain's Ministry of Defence said in a statement.

KANDAHAR - Two Afghan truck drivers were killed when a suicide car bomber blew himself up outside Kandahar Air Field, a major foreign military base in southern Kandahar province, Afghan army General Sher Mohammad Zazai said. At least 10 were wounded, he said.

GARDEZ - Sixteen Afghans working for a United Nations-sponsored demining agency who were kidnapped in eastern Paktia province on Saturday have been freed unharmed, an official for the Mine Detection and Dog Centre said. Police and local tribal chiefs were involved in securing their release. Separately, no new information was available about two Afghans working for a Dutch aid agency who were also kidnapped in neighbouring Khost province on Saturday. (Compiled by Golnar Motevalli; Editing by Paul Tait)