British tourists were among the six injured in Herat province after rebel insurgents opened fire on their convoy – including 78-year-old Hinterland Travel founder Geoff Hann – Sky News reports.
Hann, who has more than 40 years of overland adventure travel experience, is being treated for shrapnel wounds caused by a rocket-propelled grenade, according to family friend Rebecca Greaves.
The group included eight Britons, one German and three US citizens.
Hinterland Travel is based in West Yorkshire and claims on its website to be "regularly revisiting Afghanistan after the years of international and internal conflict in this starkly beautiful country".
It continues: "Some people will think that this is a little premature given that there is still internal dissension.
“We prefer to state that Afghanistan is at the cutting edge of adventure tourism, which in itself can offer benefits and progress."
An Afghan government official said the insurgents opened fire on a minibus in the convoy as it made its way through Herat province in the west of the country and an improvised explosive device was also used.
Military spokesman Najibullah Najibi said no one was seriously hurt in the attack.
The passengers’ belongings were destroyed in the incident.
Highways in Afghanistan have become increasingly dangerous, with armed groups frequently kidnapping or killing travellers.