Recent documents submitted to a U.S. federal court allege that major British bank Standard Chartered helped finance sanctioned Iranian entities and terrorist groups, and that relevant evidence was ignored by American authorities.

London-based Standard Chartered, which primarily serves clients in emerging markets, was previously punished with more than a combined $1.7 billion in fines after admitting in 2012 and 2019 to violating sanctions on Iran and other blacklisted countries.

The bank denies it ran transactions for any organizations designated as terrorists.