In this Oct. 3, 2017, file photo, tourists ride classic convertible cars on the Malecon beside the United States Embassy in Havana, Cuba.
In this Oct. 3, 2017, file photo, tourists ride classic convertible cars on the Malecon beside the United States Embassy in Havana, Cuba.
  • The US military has been carrying out and funding testing on various animals.
  • The testing is aimed at seeing if radio frequency waves cause the mysterious sickness known as "Havana Syndrome."
  • US intelligence determined last week that the ailment is likely not caused by a foreign adversary or weapon.

The US military has been carrying out experiments on animals in an effort to replicate the symptoms caused by the mysterious "Havana Syndrome," according to a new report.