BANGLADESH, April 29 -- Pakistan has quietly removed around 1,800 terrorists from its watch list, including that of the 2008 Mumbai attack mastermind and LeT operations commander Zaki-ur-Rehman Lakhvi, ahead of a new round of assessments by the global anti-money-laundering watchdog FATF, according to a US-based start-up that automates watchlist compliance. The so-called proscribed persons list, which is maintained by Pakistan's National Counter Terrorism Authority or NACTA, is intended in part to help financial institutions avoid doing business with or processing transactions of suspected terrorists.

The list in 2018 contained about 7,600 names. It has been reduced to under 3,800 in the past 18 months, according to Castellum.AI, a New York...