It was just over a year ago that the two women and children together with a group of IS women were smuggled out of the Al Hol camp in northeastern Syria.
They were later captured by the Syrian army and placed in the infamous Adra prison outside Damascus.
At Arlanda, the women were received by the police, Säpo, the Swedish Migration Board, social services and medical staff.
The police call it a special incident and the women will be investigated immediately.
According to information to SVT, they told their parents that they would go down to town and meet friends and that they would be home again a little later in the afternoon.
But they never came home.
The two women instead traveled to IS in Syria.
Has lived trapped
SVT has met relatives who tell about the shock when they both disappeared.
It was not on the map that the two women would do such a thing, they say.
The relatives state that the women lived a confined and supervised life at IS.
They have at times been allowed to have contact with their relatives in Sweden.
But their conversations have been monitored and the women have not been allowed to speak freely.
The relatives say that the women regretted and wanted to come home and that the relatives fought for a long time to try to get the women and their children home.
For more than a year, the women and children have been in the Adra prison in Syria, which is notorious for abuse and torture.
Relatives of the women have sent money to both of them every month because the prison has not provided them with food and supplies.
The Ministry of Foreign Affairs does not provide any details
SVT has spoken to the Ministry for Foreign Affairs, which for reasons of confidentiality says that they can not provide any details about the individual case.
At the same time, they say that it is not the Ministry of Foreign Affairs that has brought the women home to Sweden, but that it is the Syrian regime that is expelling them.