TY JOUR TI FEATURES OF OPERATIONAL AND SEARCH SUPPORT FOR THE PRELIMINARY INVESTIGATION OF BUDGET FUNDS THEFT KW budget funds; operational and investigative support; operational and investigative support; preliminary investigation; economic crimes; operational and investigative measures; economic security and anti-corruption units JO Bulletin of the Kazan Law Institute of MIA Russia AU Mangasarov, R.A. PY 2025 IS PB Kazan law institute Ministry of Internal Affairs Russian Federation