NEW DELHI — Stepping up the pressure in an escalating diplomatic fight, India asked the American Embassy in New Delhi on Wednesday to stop selling liquor and other duty-free goods to nondiplomats by Jan. 16, acting before the American authorities are to decide whether to prosecute an Indian diplomat in New York who was arrested in a visa fraud case.

An Indian official who spoke on the condition of anonymity said the embassy was violating local and international law by allowing the duty-free goods to be sold to nondiplomats at its businesses on the embassy grounds, which include a club with a restaurant and bar. Those goods are meant only for diplomats, the official said.

“This is a violation of local tax laws and also the Vienna Convention,” the official said.

The club at the embassy — a popular facility for Americans in New Delhi — also includes a swimming pool, a bowling alley and a tennis court.

The American Embassy in New Delhi declined to comment on India’s request. Also Wednesday, Ernest Moniz, the United States energy secretary, postponed a planned trip to India next week because of the tensions.