There was no fire or significant damage to the building and no arrests have been made, Secret Service spokesman Anthony Guglielmi said.
Cuban authorities are working to “neutralize and dismantle” the network, said Cuba’s foreign ministry.
Jose Perez left the Little League International Grove in Williamsport, Pennsylvania, on Saturday and has not been seen since, an official said.
China and Cuba had reportedly reached an agreement in principle to build an electronic eavesdropping station on the island.
U.S. intelligence agencies say they cannot link a foreign adversary to any of the incidents associated with so-called “Havana syndrome."
González, who became the center of an international custody battle at 5 years old, was nominated Sunday to Cuba's National Assembly.
A former U.S. intelligence analyst who was convicted of spying for Cuba more than 20 years ago has been released from a federal prison in Fort Worth, Texas.
A delegation of at least three U.S. lawmakers has visited Havana and met with Cuba’s government this week.
“It’s going to get a lot worse very quickly. So please hunker down,” Florida Gov. Ron DeSantis said.
Hurricane Ian devastated Pinar del Río province, where much of the tobacco used to make Cuba’s iconic cigars is grown.