Prey Sar prison on Saturday transferred 100 inmates to Correctional Centre 4 in Pursat province due to overcrowding at the Phnom Penh facility.
Prey Sar, also known as Correctional Centre 1, currently holds more than 5,000 inmates.
San Keo, spokesman for the General Department of Prisons, confirmed the 100 inmates had arrived safely at CC4 in Pursat’s Veal Veng district.
“CC1 can hold between 2,000 and 3,000 inmates but there are currently 5,500 there. That is why we have transferred some to CC4,” Mr Keo said.
“We will be constructing more prison buildings,” he said, adding that CC4 has space for 7,000 prisoners.
Am Sam Ath, monitoring manager at rights group Licadho, said court officials should consider releasing some prisoners on bail.
“There has been an increase in detainees because lots of suspects are being arrested as part of the the anti-drugs campaign,” Mr Sam Ath said.
“Overcrowding in prison affects the health of the inmates. They can’t get enough sleep when they live in such a small space together.”
He said there are currently 30 to 40 inmates in a prison cell which should hold between 15 to 20 people.
“The court should consider giving bail to those convicted for minor crimes. Police should also do more to prevent offending in the first place,” he said.