Tribunal judges who examine allegations about covert investigations are considering complaints made by two former senior police officers against the PSNI.
Former West Yorkshire chief constable Mark Gilmore, an ex-PSNI officer, and retired PSNI assistant chief constable Duncan McCausland, have asked the specialist Investigatory Powers Tribunal to examine their concerns about the way they were investigated by the PSNI during an anti-corruption inquiry.
Three tribunal judges oversaw a preliminary hearing in London on Tuesday and said they hoped for a trial in Belfast in July.
