Nigeria's interior minister has ordered prison guards to "shoot to kill" those involved in jailbreaks.
Rauf Aregbesola made the comments in an address to prison staff in the southern city of Ibadan, saying anyone who attempts to breach security "must not live to tell the tale".
Over the past year armed groups have attacked various prisons, enabling more 5,000 inmates to escape.
A number of prison guards and detainees have also been killed.
Rights activists have expressed concern that the new policy may be abused by the security forces.
Nigeria's extremely slow judicial system means that about three quarters of almost 70,000 inmates are awaiting trial, according to the BBC's Ishaq Khalid.
The interior minister said this was partly responsible for the frequent jailbreaks.
Mr Aregbesola was speaking to senior officers at the Agodi Custodial Centre on Monday, where he said about two thirds of the 1,001 inmates were awaiting trial - in a facility designed to hold 400 prisoners.