Updated

The Afghan attorney general's office says it has launched an investigation into misconduct at Afghanistan's largest bank, which nearly collapsed last year after a management shake up and corruption scandal.

A spokesman for the attorney general's office says the Afghan Central Bank sent a five-page letter to Attorney General Mohammad Ishaq Alako saying that certain groups should be investigated for their role in allowing Kabul Bank to fall into crisis.

Spokesman Amanullah Eman said Wednesday the attorney general has launched an investigation based on this information. He would not give further details, saying that the investigation is in its preliminary stages.

Representatives for the Central Bank could not be reached for comment.