Greater Manchester PoliceThree prison officers have been attacked by Hashem Abedi, the brother of the Manchester Arena bomber, a source has told the BBC.
The officers sustained life-threatening injuries on Saturday including burns, scalds and stab wounds in the attack at HMP Frankland in County Durham, the Prison Officers' Association said.
Abedi threw hot cooking oil over the officers and used "home made weapons" to stab them, the organisation alleged.
The Prison Service confirmed three officers have been treated in hospital after an attack by a prisoner, adding police were investigating.
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