The princess, who was King of Spain Felipe VI's cousin, died aged 86 in Paris on Friday, the London-based Metro newspaper said in a report on Sunday.
Her younger brother Prince Sixtus Henry of Bourbon-Parma announced her demise, as the death toll in Spain increased to 6,528, now the second highest in the world after Italy (10,023).
Princess Maria Teresa, of the Bourbon-Parma Royal Family, was born in Paris, France, on July 28, 1933 to Prince Xavier and Madeleine de Bourbon.
Known for her activism and views, she was dubbed as the "Red Princess."
Her death comes the UK's Prince Charles also tested positive for coronavirus.
The Prince of Wales has "mild symptoms" of COVID-19, but otherwise remains in good health, a spokesperson said last week.
Also last week, Monaco's Prince Albert II tested positive for the novel coronavirus.
A week earlier, the Archduke of Austria Karl von Habsburg became the first royal to test positive for COVID-19.
Indo-Asian News Service
Anthony Fauci, head of infectious diseases at the National Institutes of Health, told Fox News the guidance on masks would be changed "because of some recent information that the virus can actually be spread even when people just speak, as opposed to coughing and sneezing."
Shortages of critical equipment led to fierce competition among buyers from Europe, the US and elsewhere. A regional leader in Paris described the scramble to find masks a “worldwide treasure hunt.” Gov. Andrew Cuomo warned that New York could run out of ventilators in six days.
Italy reported its lowest daily death toll in two weeks, in a possible sign the tide may be turning in the deadliest disaster the country has faced since World War II. In Spain, officials said the number of fatalities had fallen for the third straight day.
The company said on Monday that it has started using human reviewers to assess whether tweets violate its policy against COVID vaccine misinformation. Eventually, the work will be done by a combination of humans and automation, it said.
Dubai Electricity and Water Authority’s (DEWA’s) Jebel Ali Power Generation & Water Production Complex has been confirmed by Guinness World Records as the largest single-site natural gas power generation facility in the world.
An Emirati couple in Abu Dhabi is grateful for the support they have received, giving their seven-month old identical twins, found to be suffering from a rare disease, the chance to live and enjoy life.
A research team of undergraduate students at Khalifa University of Science and Technology have designed and implemented a complete prototype of an electric flying car. This research, which was presented as a graduation project, marks the beginning of futuristic flying cars that will be developed and manufactured in the UAE.