Two Russian citizens have been placed under house arrest in Armenia after authorities uncovered separate cases of large-scale cash smuggling at Yerevan’s Zvartnots Airport.

The State Revenue Committee, which oversees customs, said in a statement that together with National Security Service operatives it obtained information indicating that a Russian citizen identified by the initials R.T. had conspired to smuggle a large amount of cash from Russia to Armenia.

Upon arrival at Zvartnots Airport, the suspect was searched, and authorities found 65 million Russian rubles in undeclared cash, equivalent to about 321 million Armenian drams.

The case was referred to the Investigative Committee, and a court later ordered house arrest for the suspect.

One day later, authorities found an additional 7.6 million Russian rubles in undeclared cash—about 37 million drams —in the possession of a relative of the suspect who had also arrived in Armenia. The second individual, also a Russian national, was likewise placed under house arrest by court order.