The Netherlands sought "clarification" from Tehran Wednesday on the plight of a Dutch-Iranian woman reportedly sentenced to death there.

"I am extremely concerned about the situation with Sahra Bahrami and have asked the Iranian authorities to provide immediate clarification about these worrying reports," Dutch Foreign Minister Uri Rosenthal said in a statement.

"We insist on information, the possibility to provide her with consular assistance, and a fair course of justice," the statement said.

Bahrami, 46, has been imprisoned in Iran since December 2009.

The Iranian-born, naturalised Dutch citizen was reportedly arrested after taking part in a protest against the Iranian government while visiting relatives there.

The Netherlands claims Iran has refused the Dutch embassy access to the prisoner as it does not recognise her dual nationality.

Dutch broadcaster Radio Netherlands Worldwide reported on Wednesday that Bahrami had been found guilty of drug smuggling and sentenced to death by a court in Tehran.

It cited her daughter, Banafsheh Najebpour, who said the ruling was delivered on Sunday.

According to the broadcaster, Bahrami is awaiting trial in a second capital case in which she is accused of membership of an armed opposition group.