TALLAHASSEE (Reuters) — Excavations at a makeshift graveyard near a now-closed reform school in the Florida Panhandle have yielded remains of 55 bodies, almost twice the number official records say are there, the University of South Florida announced on Tuesday, January 28.

On a hillside in the rolling, tall-pine forests near the Alabama-Georgia border, a team of more than 50 searchers from nine agencies last year dug up the graves to check out local legends and family tales of boys, mostly black, who died or disappeared without explanation from the Dozier School for Boys early in the last century.

The school, infamous for accounts of brutality told by former inmates, was closed by the state in 2011.

The University of South Florida was commissioned to look into deaths at the school in the Panhandle city of Marianna, after the Florida Department of Law Enforcement announced the presence of 31 official grave sites in 2010.

Excavation began last September with bones, teeth and several artifacts from grave sites sent to the University of North Texas Science Center for DNA testing.

Members of 11 families who lost boys at Dozier have been located by the Hillsborough County Sheriff’s Office for DNA sampling and researchers hope to find 42 more families for possible matching.

State investigators initially located 31 suspected graves in the woods across a busy highway from the shuttered reform school. Kimmerle’s more detailed probes raised the number to 50 or 51 last year, and USF announced on Tuesday the searchers had found remains of 55 bodies.

Research will continue in areas adjacent to the graveyard, dubbed “boot hill” by school officials and inmates a century ago.