The Enforcement Directorate has summoned Punjab National Bank's Managing Director and CEO Sunil Mehta in connection with with the Rs 11,400 crore PNB scam allegedly involving diamantaire Nirav Modi and owner of Gitanjali Gems Mehul Choksi, officials said today.

The ED today also examined the state-owned bank's Executive Director K V Brahmaji Rao to understanding how the alleged fraud was detected and other banking procedures.

Mehta, officials said, will be asked similar questions when he meets ED officials this week. They said the two officials are not being examined as an accused.

The CBI had examined the two senior PNB officials last week in the same case.

Meanwhile, beleaguered diamond merchant Modi, his wife Ami and his uncle Choksi today skipped their scheduled appearance before the Enforcement Directorate (ED) in Mumbai.

It was not immediately known if the agency will issue fresh dates to them.

If it does not issue them fresh summons, it is understood, the ED is expected to move a special court in Mumbai seeking non-bailable arrest warrants against them.  -- PTI