The Corruption and Crime Commission says it is putting extra focus on the use of force within police lock-ups.
The CCC Commissioner Roger Macknay has told a parliamentary committee he is particularly concerned by the use of strip searches and padded cells.
A report on allegations about the use of force at the Broome police station is expected to be tabled by the end of the year.
The CCC’s report on whether an officer used excessive force while handling a detainee at the lock-up is expected to be tabled by the end of the year.
The Police Commissioner Karl O’Callaghan has accused the commission of holding up the investigation, arguing it could have been handled more quickly by the police internal affairs unit.
Mr Macknay told the committee the inquiry examined, not only the conduct of the officer in question, but wider issues such as the adequacy of record-keeping and supervision.
The Commissioner says the CCC is now working to pro-actively identify other incidents by obtaining footage from stations and watch houses across the state.
“It’s looking at things both in a general way to ensure that the rights of detainees are properly protected and without going into any detail, the Commission also has matters under investigation at the moment,” he said.