Narges Mohammadi, the 2023 Nobel Peace Prize winner currently imprisoned in Iran, has suffered a suspected heart attack while in custody, according to her family.

Mohammadi's brother said he fears her life is in imminent danger and that she needs to be transferred to a hospital for proper medical treatment. The family has not provided details about when the suspected cardiac event occurred or her current condition.

Mohammadi, a prominent Iranian human rights activist, was awarded the Nobel Peace Prize in October 2023 for her decades-long fight for women's rights and democracy in Iran. She has been imprisoned multiple times for her activism.

The 52-year-old activist has been serving her sentence in Tehran's Evin Prison, known for housing political prisoners. Her imprisonment has drawn international attention and criticism from human rights organizations worldwide.

Iranian authorities have not responded to the family's claims about Mohammadi's health condition or requests for her medical transfer.