Cuba on Tuesday said a U.S. Senate hearing on alleged "acoustic attacks" on American diplomats in the island nation was unacceptable and only served to impose an accusation without evidence, Xinhua reported.

The Senate hearing on the investigation of "acoustic attacks" against U.S. diplomats residing in Cuba was criticized by a top Cuban diplomat on U.S. affairs as an accusation that Washington has been unable to prove. 

Josefina Vidal, general director of the United States division of Cuba's Foreign Ministry, said at a press conference that the biggest victim of Tuesday's hearing was the truth behind the controversial issue.

"It's clear this is an unfounded accusation against Cuba. The State Department has no evidence that allows them to claim there have been attacks against its diplomats in Havana or that Cuba could be responsible or have knowledge of third-party actions against foreign envoys," she added.

Vidal said that after months of investigations it has been demonstrated that alleged attacks never took place.

"The Cuban government has no responsibility for the health incidents reported by U.S. diplomats. We are aware of our responsibilities and fulfil them in an exemplary manner," Vidal noted.

Vidal said the issue has been "politicized" in order to justify Washington's roll back of thawing ties between the former Cold War enemies.