Tarhouna had for years been controlled by a militia known as the Kaniyat, run by the local Kani family, which fought alongside Khalifa Haftar’s eastern-based Libyan National Army (LNA).
The GNA has issued arrest warrants for Kaniyat leaders who are now believed to be in eastern Libya.
When Turkish support helped the internationally recognised GNA take back Tarhouna in a sudden advance in June, its fighters found a hospital piled with bodies and unmarked graves containing missing people.
Investigators from the GNA’s missing persons bureau have since then been working, in white forensic suits, to dig through the ruddy earth around Tarhouna for human remains and to identify the bodies.
Many of the bodies recovered so far were those found in the hospital. However, dozens of bodies have also been unearthed from the unmarked grave sites.
Some of the bodies discovered show the marks of violence, including, among those revealed this week, a smashed skull and dismembered limbs, a missing persons bureau official said.