Authorities are also searching a property on Miami’s Fisher Island believed to be linked to Vekselberg, NBC reported.
Vekselberg is the head of the Renova Group, a Moscow-based conglomerate, and one of several wealthy Russians who have been targeted by sanctions following Moscow’s invasion of Ukraine.
The sanctions have frozen Vekselberg’s US assets and banned American companies from doing business with him and his companies.
He is also being investigated by the US Justice Department for committing bank fraud, but no charges have been filed, NBC reported.
In April, Vekselberg’s 90 million euro ($99 million) superyacht was seized by Spanish authorities at the request of the US government.
The 78-meter-long yacht named Tango was impounded at the Mediterranean port of Palma de Mallorca by Spanish police, Spain’s Guardia Civil police force said in a statement issued at the time.