Protests are under way across Poland after the death of a 37-year-old woman this week who was refused an abortion, a year since the country introduced one of the most restrictive abortion laws in Europe.

On the streets of Warsaw on Tuesday night, protesters laid wreaths and lanterns in memory of Agnieszka T, who died earlier that day. She was pregnant with twins when one of the foetus’ heartbeat stopped and doctors refused to carry out an abortion. In a statement, her family accused the government of having “blood on its hands”. Further protests are planned in Częstochowa, the city in southern Poland where the mother-of-three was from.

“We continue to protest so that no one else will die,” Marta Lempart, organiser of the protests, told Polish media. “The Polish abortion ban kills. Another person has died because the necessary medical procedure was not carried out on time.” All-Poland Women’s Strike has called on people across the country to picket the offices of the ruling Law and Justice party (PiS) and organise road blockades in the coming days.

Agnieszka was first admitted to the Blessed Virgin Mary hospital in Częstochowa with abdominal pain on 21 December. She is said to have been in the first trimester of a twin pregnancy when she arrived and was in “a good physical and mental shape”, according to her family, who said her condition then deteriorated.

On 21 December the heartbeat of one of the twins stopped and, according to Agnieszka’s family, the doctors refused to remove it, quoting the current abortion legislation. They waited several days until the second foetus also died. A further two days passed before the pregnancy was terminated on 31 December, according to the family.

A priest was then summoned by hospital staff to perform a funeral for the twins, the family said.

The family say that the doctors refused to terminate the pregnancy earlier, citing Poland’s abortion legislation. “Her husband begged the doctors to save his wife, even at the cost of the pregnancy,” Agnieszka’s twin sister, Wioletta Paciepnik, said on Tuesday.

After the termination, Agnieszka was moved from the gynaecological ward and her health continued to deteriorate. Her family suspect that she died of sepsis but the cause of death was not identified in a statement released by the hospital.

Shortly after her death, a statement by her family accusing the hospital of neglect was published on Facebook, alongside a distressing video of Agnieszka’s last days.

Agnieszka’s death marks the first anniversary of the 2021 ruling that declared abortion due to foetal abnormalities illegal. Abortion can now only be carried out in cases of rape, incest or if the mother’s life and health are in danger.

Her death comes after that of a woman known as Izabela last September, who died after being denied medical intervention when her waters broke in the 22nd week of her pregnancy. Her family claim the 30-year-old was refused an abortion or caesarean section and that the hospital cited the country’s abortion laws. An investigation found that “medical malpractice” led to Izabela’s death and the hospital was fined. Soon after, an anonymous man from Świdnica in south-west Poland came forward to share that his wife, Ania, died in similar circumstances in June last year.

While “selective abortion” is possible in the case of a twin pregnancy, it is unclear whether aborting an unviable foetus to save its healthy twin is permitted by the new abortion legislation. The Polish court has not referenced the questions raised by this situation, presented by opposition senators last year, in the new legislation.

“We want to honour the memory of my beloved sister and save other women in Poland from a similar fate,” Paciepnik said in a video appeal. The case is now being investigated by the regional prosecutors in Katowice, who also investigated the case of Izabela.

The family are represented by Kamila Ferenc, from the Federation for Women and Family Planning, who confirmed that an autopsy of Agnieszka’s body has been ordered by the court.

According to a statement from the hospital, Agnieszka tested positive for Covid before her death, although she tested negative twice when first admitted. “We stress that the hospital staff did all the necessary actions to save the patient,” the statement read. The hospital did not respond to the Guardian for a request for comment.