Metropolitan Superintendent, Chris Kunyanban, said this was a factor behind a recent escape from the cells.
Kunyanban said detainees recently cut through the Lae holding cells fence and escaped when they were taken out to have their shower.
And while the fence has been fixed, the problem still remains; and that is overcrowding.
Kunyanban said while those who escaped were held for minor crimes, the cells also have people who have been remanded as well as convicted prisoners.