Bangladesh, July 11 -- Ukraine is investigating a case that has rapidly evolved from an international bombing inquiry into a complex homicide involving current and former members of the countrys security establishment. What began as an assassination attempt in the wealthy enclave of Monaco has now expanded into a murder investigation near Kyiv, exposing a web of intelligence operatives, organized crime allegations, cryptocurrency transfers, and speculation about Ukraines lucrative underground scam call center industry.

At the center of the case is 39-year-old Anastasia Berezovskaya, whom investigators identify as the principal suspect in the bombing of a luxury residential building in Monaco. According to Ukrainian prosecutors, Berezovsk...