Herat, Afghanistan: Kidnappers have abducted two Iranian travellers on their way to the western Afghanistan city of Heart, a police spokesman said on Saturday.

"Two Iranian citizens were abducted on the highway between Herat and Islam Qala," said police spokesman General Abdul Rauf.

"We are conducting an operation to release these two Iranians," he said.

One of the two kidnapped men is Reza Usmani, director of an Iranian road construction company constructing a road from Herat to Faryab province.

The second man is Hasan Parsiyani, a businessman who was looking to invest in Afghanistan.