Angola’s chief prosecutor on Friday said funds that Isabel dos Santos, who is accused of stealing millions of dollars from state companies, invested in Portugal had been embezzled from her home country.

“Angola believes that the money used for business conducted by Isabel dos Santos in Portugal left Angola by illicit means,” Helder Pitta Gros told the RTP television station on a trip to Lisbon.

The accusation comes a day after the tycoon daughter of Angola’s ex-president Jose Eduardo dos Santos vowed she would fight what she called “misleading and untrue” allegations which have stretched across Angola’s state oil and diamond industries and banks to Lisbon.