Kabul: Queues formed at branches of Afghanistan's biggest bank on Sunday as customers clamoured to withdraw their savings, though lines were shorter days after corruption allegations appeared in US newspapers.

Security appeared to have been stepped up at the head office of Kabul Bank, with armoured vehicles parked outside as crowds thronged the banking chamber.

Many customers said they wished to withdraw their money because they had lost trust in the bank, though others said they simply needed cash ahead of this week's Eid holiday at the end of Ramadan.

Waheed Shirzoi, 26, said: "I am withdrawing my money because I am taking a trip and I also believe my money will not be safe in this bank."

Privately-owned Kabul Bank has been the subject of reports alleging large-scale corruption, though the government and central bank have said it is solvent and there is no need to panic.