The move followed reports detailing how A7, a Moscow firm, uses shell companies around the world to move funds for clients who are themselves subject to sanctions.
President Trump has said he is considering restricting overseas sales of the fuel to bring down domestic prices, but experts say the policy will have many unintended effects.
A Moscow firm uses shell companies and cryptocurrency to launder money, and a custom app to forge trade records, to help Russia bypass sweeping financial restrictions.
A currency exchange board in Bishkek, Kyrgyzstan. Shell companies created by a Moscow firm, A7, used transactions in Kyrgyzstan to help Russian businesses evade sanctions.
India is trying to secure affordable energy while preserving a crucial relationship with Washington, a balancing act made harder by turmoil in global energy markets.