CARACAS, Venezuela (AP) — One week after gunfire tore through Uribana prison in one of Venezuela’s deadliest-ever prison clashes, the families of some inmates say they haven’t been able to find their relatives.

They say they’ve looked at the morgue, in the hospital and on lists of inmates transferred to other prisons after the violence on Jan. 25. The government says 58 people were killed in the clash between armed inmates and security forces, but one Venezuelan prison watchdog group says that according to its tally at least 63 died.