Islamic Republic security forces raided on Monday the home of the mother of Fereydoun Mahmoudi—who was killed during protests in the Kurdish city of Saqqez last year.
Three men and one woman were involved in the operation. They told Mahmoudi's mother that they were looking for her daughter-in-law, Shermin Habibi, according to Radio Farda.
The security forces showed a warrant for Habibi's arrest.
"They came ... saying they have an arrest warrant because of our criticism of the government," according to a source.
Habibi is required to present herself to the Saqqez Prosecutor's Office's second branch on August 22.
She has previously spoken about the pressures that security forces have put on her family since her husband Fereydoun Mahmoudi's death.
The raid on Mahmoudi's mother's home is the latest in a series of incidents targeting the families of those killed during last year's protests.
The Islamic Republic has cracked down hard on the widespread protests sparked by the September death of a 22-year-old Kurdish woman, Mahsa Amini, while she was in police custody for an alleged head-scarf violation.
More than 500 people have been killed in the clampdown and over 20,000 have been unlawfully detained, activists say.
Following biased trials, the judiciary has handed down stiff sentences, including the death penalty, to protesters.