Sweden's Crown Princess Victoria and her spouse Prince Daniel have tested positive for COVID-19, Swedish Television (SVT) reported on Thursday.

The royal couple isolated themselves on Wednesday following cold symptoms, the Royal Court's information manager Margareta Thorgren told SVT.

"They both show milder flu-like symptoms but feel good under the circumstances," Thorgren said. 

The couple's children Princess Estelle and Prince Oscar were also quarantined at home.