US considers closing Cuba embassy over sound wave incidents

US Secretary of State Rex Tillerson says the US is considering closing its embassy in Havana, Cuba. Photo / AP

The United States is considering closing its embassy in Havana in response to an alleged sonic attack on US personnel in Cuba, Secretary of State Rex Tillerson says.

"We have it under evaluation," Tillerson said on CBS' Face the Nation programme.

"It's a very serious issue with respect to the harm that certain individuals have suffered."

Five Republican senators on Friday called for the Trump administration to retaliate against the Cuban government by expelling Cuban diplomats and possibly shuttering the US embassy there over attacks that began in late 2016.

The State Department said in August that Americans linked to the US embassy in Havana had experienced physical symptoms from "incidents" involving sound waves. Five Canadians were also affected.

Symptoms included nausea, dizziness and temporary loss of hearing or memory.

Cuba, the US and Canada have investigated the attacks, but the probe has not yielded any answers about how they were carried out or who was responsible for them.

Cuba has denied involvement. The US State Department has not blamed Havana for the attacks but asked two Cuban diplomats to leave Washington in May.

- AAP