Tehran - Afghan President Hamid Karzai arrived in Tehran on Tuesday to attend the 10th Summit of the Economic Cooperation Organization (ECO) and discuss regional political and economic issues.

Iran, Pakistan and Turkey founded the ECO in 1985. Later Azerbaijan, Afghanistan, Kazakhstan, Kyrgyzstan, Tajikistan and Turkmenistan joined the group.

Karzai is expected to discuss possible Iran-US cooperation in Afghanistan with his Iranian counterpart Mahmoud Ahmadinejad prior to the summit on Wednesday.

US Secretary of State Hillary Rodham Clinton said last week that Iran would be invited to a conference on Afghanistan scheduled for this month in a European capital.

Iran said it would be ready to help the West in Afghanistan but has not yet received any official invitation from the US to attend the regional conference aimed at stabilizing Afghanistan. (dpa)