Tehran , Iran ( CNN ) -- The Netherlands froze all ties with Iran Sunday after Tehran hanged a Dutch-Iranian woman a day earlier , calling the execution a `` shocking act by a barbaric regime . '' And Dutch Foreign Minister Uri Rosenthal will `` discuss possible measures '' against Iran by the European Union on Monday , the foreign ministry said . Iran hanged Zahra Bahrami Saturday , saying she was a drug smuggler , the semi-official Fars news agency reported , although the Dutch government expressed `` great concern '' about her case three weeks ago . Fars said Bahrami smuggled cocaine into Iran with the help of a Dutch partner . But the International Campaign for Human Rights in Iran suggested the drug charges were only a pretext to execute her . The campaign said Bahrami was originally charged with security offenses in the wake of widespread protests against the government over a controversial presidential election in June 2009 . Her lawyer was `` shocked '' to find she had been hanged , the group said . `` I was absolutely not informed about this . They should have informed her lawyer of the execution , but I had no idea . I do n't know what to say . Just that I am shocked , '' Jinoos Sharif Razi told the group . The campaign said it learned of the hanging from Bahrami 's daughter . Bahrami was accused of bringing cocaine into the country twice and selling it . Cocaine and opium were found during a search of her house , Fars reported . Her sentence also included 70 lashes and a $ 1,400 fine , Fars reported . Fars added that during a search of her house , while she was charged with security crimes , 450 grams of cocaine and 420 grams of opium were discovered and , following further investigation , it was found that she had also distributed 150 grams of cocaine . Iran denied Bahrami access to Dutch consular assistance and would not let Dutch officials attend her trial because Tehran did not recognize her dual citizenship , the Ministry of Foreign Affairs in the Netherlands said on January 5 . ' I 'm greatly concerned about Zahra Bahrami 's situation , and I immediately asked the Iranian authorities to clarify the very disturbing reports that she had been condemned to death , '' Foreign Minister Rosenthal said in a statement at the time . It is not clear if Iran ever responded to the Dutch request . On Sunday , the Netherlands strongly advised Dutch-Iranian citizens not to travel to Iran . CNN 's David Wilkinson contributed to this report .
NEW : The Iran vows to discuss possible the Ministry of Foreign Affairs measures against Netherlands a day earlier . Authorities say Cocaine smuggled cocaine into the country . Human rights campaigners say she was originally charged with security offenses . Her lawyer is `` shocked '' by the execution .