"Authorities know that if they don't crack down, Iranian women will continue to test the boundaries of what they can and cannot wear", he added.
At least two photos shared on Twitter on Wednesday showed women in traditional black chador robes, standing on pillar box with signs supporting freedom of choice for women.
The White House condemnation Iran's handling of the nation-wide protests, which began in December past year, has been met with skepticism in Tehran which has accused the former of interfering in its internal matters. Masih Alinejad, a US -based journalist and anti-hijab activist, said they started inside Iran and were not influenced from overseas.
The Iranian regime, of course, is conspiracy theories that the anti-hijab movement is the work of foreign agitators seeking to undermine the Islamic Republic. Mowahed was shortly arrested after her protest, but was reportedly released following an outcry from human rights activists.
The protests appear to imitate the actions of a 31-year-old protester identified as Vida Movahed, who took off her hijab on the same street in Tehran in December.
A few months after the 1979 revolution in Iran, compulsory laws forcing women to cover their heads and wear loose clothing came into effect.
Several images and videos of the demonstrations have gone viral on social media. The footage shows Mohaved waving her white hijab defiantly from the end of a pole, her black hair flowing uncovered. The law was enforced with brute force on the streets until all women felt no other alternative but to follow the dress code.
The easing of the enforcement has emboldened younger women to become more defiant, but recent incidents in which they have removed their hijabs in protest could still lead to prison sentences.
Those arrested were accused of public order offences and referred to the state prosecutor's office, the Fars, ILNA and Tasnim news agencies reported without elaborating.
Soheila Jolodarzadeh, a female member of the Iranian parliament, said the protests were the result of longstanding restrictions.