The Historical Institutional Abuse Inquiry is to investigate two additional state-run institutions in Derry.
The inquiry has already investigated St Joseph’s Boys’ Home, Termonbacca, and Nazareth House Children’s Home at Bishop Street in Derry.
However, Fort James Children’s Home at Ardmore and Harberton House Assessment Centre in Irish Street in the city’s Waterside are also now to be examined.
Both establishments were controlled by the former Western Health and Social Services Board and have since closed.
The announcement was made this morning by Inquiry chairman Sir Anthony Hart.
The Fort James and Harberton House module is scheduled to take place next month.
The HIA inquiry was set up in 2013 to investigate child abuse in residential institutions in Northern Ireland over a 73-year period, up to 1995.
In total, the inquiry is expected to hear from more than 300 witnesses during the course of the public evidence sessions.