Afhganistan - An individual wearing Afghan army uniform shot and wounded five Nato soldiers in eastern Afghanistan on Tuesday, the alliance says.

The five, believed to be American, are receiving medical treatment. The extent of their injuries is not known.

   The attack took place at a Nato base in Wardak province, east of Kabul.

   It is the latest in a series of so-called "green-on-blue" attacks, where Afghans in the police or army attack international forces.

  More than 20 foreign personnel have been killed in rogue shootings in Afghanistan this year.

  On Sunday, three British soldiers were shot and killed by an Afghan policeman as they left a checkpoint in Helmand province, in the south.

  International forces are gradually handing over responsibility for security to their Afghan counterparts ahead of the planned withdrawal of Nato-led troops at the end of 2014.

  On Tuesday, the US and Pakistan announced that Nato supply routes into Afghanistan would re-open after Washington apologised for killing 24 Pakistani soldiers last November.