Prisons in England and Wales are to receive £100m to improve security and cut crime, the government has said.
Airport-style security – such as X-ray scanners and metal detectors – would be introduced in more prisons, it said.
PM Boris Johnson said stopping weapons, drugs and phones getting into jails would prevent them becoming “factories for making bad people worse”.
But Labour accused him of “tinkering”, adding cuts had led to “unprecedented levels of violence in our prisons”.
It comes after Mr Johnson announced a programme to create 10,000 additional prison places and said the Crown Prosecution Service would receive an extra £85m over the next two years, to help deal with a rise in violent crime in England and Wales.
It also follows government initiatives for the NHS and