TEHRAN, Iran — For months, Iranian authorities did little to enforce the law on women covering their hair, but now the country's theocracy is pushing to make businesses the new battleground over the mandatory headscarf.

The eff ort comes ahead of the first anniversary of nationwide protests that erupted after the Sept. 16 death of Mahsa Amini in the custody of the country's morality police. A crackdown by security forces that followed saw more than 530 people killed and over 22,000 arrested.

These days, with uncovered women a common sight on Tehran streets, authorities have begun raiding companies where women employees or customers have been seen without the headscarf, or hijab. Iran's parliament is discussing a law that would increase punishments on uncovered women and the businesses they frequent.

The developments could foment new unrest as parliamentary elections loom next year and the country's economy struggles under the weight of international sanctions imposed over Iran's nuclear program.

"If I face penalties and punishment, I will wear the headscarf since I am in a … prominent position," said Parvaneh, a doctor who treated protesters injured during demonstrations last year. Like several other women who spoke to The Associated Press, she asked that only her first name be used for fear of reprisals.

"But the young people I treated during the protests will not pull back," she added.

For observant Muslim women, the head covering is a sign of piety before God and modesty in front of men outside their families. In Iran, the hijab — and the all-encompassing black chador worn by some — has long been a political symbol as well, particularly after becoming mandatory in the years following the 1979 Islamic Revolution.

After the death of Amini, who was picked up for her allegedly loose headscarf, police were hesitant to strictly enforce the Islamic dress code — possibly to avoid even wider demonstrations and displays of defiance. But in recent weeks, the tone has changed.

"I'm telling you that this lack of hijab will be definitely put an end to," hard-line President Ebrahim Raisi said.

Authorities have started sending warning text messages to women seen without the veil in cars: around 1 million messages were sent. In time, some 2,000 cars were confiscated and over 4,000 women referred to prosecutors.

Next, security forces scoured social media for companies with images of uncovered women in the workplace. One of the offices of Digikala, a hugely popular digital retail website with more than 40 million active monthly users, was closed. Also briefly shut were the online bookstore Taghcheh and insurance marketplace Azki.

The crackdown extended beyond the capital of Tehran. In the northern city of Lahaijan, local health officials ordered hospitals and clinics to stop providing services to uncovered women. In Damavand, a town some 40 miles east of Tehran, prosecutors ordered the arrest of a bank manager and a teller over serving a woman not wearing the hijab.