Works by Galileo, Sir Isaac Newton and Goya were among the irreplaceable volumes stolen in Feltham, west London, in 2017.
A man, believed to be aged in his 20s, died at the scene.
At no time in its history has Feltham Young Offenders Institute been a safe or loving or constructive place for children. They deserve a better chance and a better future – as do their victims.
13 staff needed hospital treatment after a spate of incidents at the weekend.
The public have been warned not to approach Rehan Khan.
Police are searching for a man in connection with the attack.