Shares of the state-run bank closed at Rs 20.90 per scrip -- down 6.49 per cent -- from its previous session's close.
On the NSE, the bank's shares hit the lowest since August 2006.
It nosedived by 17.98 per cent to a fresh 52-week low of Rs 18.25 per share. On a closing basis, the shares declined by 6.29 per cent and closed at Rs 20.85 per scrip.
The state-run lender filed a complaint with the Central Bureau of Investigation (CBI) on April 11, 2018, against Era Infra Engineering Ltd in view of irregularities reported in their accounts with the bank.
"With regard to material impact, we inform that as on March 31, 2018, the Era Infra Engineering Ltd has a total exposure of Rs 757.53 crore in our bank. The account was categorised as non-performing asset since July 1, 2013 onwards," the UCO Bank said in a regulatory filing on Monday.
The lender also said the bank is holding 100 per cent provision against the account and that there is no additional material impact.
Earlier, the agency had filed a case against Kaul, Era Engineering Infra India (EEIL), its CMD Hem Singh Bharana, two chartered accountants -- Pankaj Jain and Vandna Sharda -- and Pawan Bansal of Altius Finserve, among others, in connection with the alleged Rs 621 crore loan fraud which caused a loss of over Rs 737 crore to the bank.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)