Prisoners were being released as rebels moved into the Aleppo and Hama area, before Assad left. I read this in The Guardian yesterday:
‘He has come out an old man’: joy and grief as loved ones released from Assad prisons
Family members describe renewed hopes after decades-long searches for political detainees in ‘Kingdom of Silence’

Moammar Ali has been searching for his older brother for 39 years.

In 1986, Syrian soldiers arrested the university student Ali Hassan al-Ali, then 18, at a checkpoint in north Lebanon. Moammar has not heard from him since.

He spent the next three decades visiting different security branches in Syria, where he would receive conflicting information on the whereabouts of his brother.

“There was no place in Syria we didn’t visit. We went around the whole country asking what happened to him. One day they would admit they had him in prison, the next day they would deny it,” Ali, a resident of Akkar, north Lebanon, said. . . .Until Thursday night, when Ali’s phone started to buzz. Friends, relatives and family members began sending him the same picture: a bedraggled man in his late 50s, standing dazed in front of the Hama central prison in north Syria.

“They said he resembled me. I told them: ‘this is my brother!’ The feeling … it’s indescribable. Imagine that I haven’t seen him for 39 years and then all of a sudden his picture is sent to you, how would you feel?” Ali said.

His brother, who entered prison as an 18-year-old, was now 57. “He has come out of prison as an old man.”

A lot of families will be trying to retrieve their released loved ones. Families that are still alive themselves.