1990 Strangeways Prison riot April, HM Prison Durham, HM Prison Winchester and HM Prison Wandsworth on 4 April, and HM Young Offenders Institute Glen Parva on 6 April. The weekend of 7 April and 8 April saw protests across the prison system. At HM Prison Leeds there was a sit-down protest after the arrival of over 100 prisoners who had been transferred from Strangeways. At HM Prison Dartmoor, between 100 and 120 prisoners wrecked D wing of the prison, and 12 prisoners also protested on the roof of C wing unfurling a banner that read "Strangeways, we are with you". 32 prisoners from Dartmoor
Pudu Prison siege crisis inside the prison walls grew and anxiety increased. Large crowds began to gather outside of Pudu Prison every day, eager to find out what was going on inside. The high-rise buildings in the neighbourhood became watch towers for the public. The other prisoners there could see what the security forces were doing and planning in the canteen. The Malaysian Prime Minister Dato' Seri Dr Mahathir Mohamad, who was supposed to leave on an official overseas trip, stayed on in the federal capital to ensure the matter was resolved without bloodshed. This was conveyed to the police forces on scene