Tunda (73), who was brought to the Karnal jail last night from Ghaziabad jail, was allegedly attacked by two inmates following a verbal a tiff on some issue while they were having tea, police said.
"The inmates allegedly tried to strangulate him but he was rescued by alert jail staff. He was taken to the local hospital for medical check-up under heavy police security. He is fine," said SP Karnal Pankaj Nain.
The inmates who allegedly attacked Tunda were identified as Amandeep and Joginder, police said, adding security for Tunda has been heightened.
Tunda, a bomb expert for terror outfit Lashkar-e-Taiba, will appear before a Panipat court tomorrow in connection with a 1997 bomb blast in a private bus in Panipat, police said.
A resident of Pikhuwa in Uttar Pradesh's Ghaziabad district, Tunda was arrested by Delhi police from Indo-Nepal border in 2013. The CBI had charged him with organising LeT's major terror attacks outside Jammu and Kashmir.
He is accused in 43 bomb blasts in Mumbai, Hyderabad, Delhi, Rohtak and Jalandhar in which over 20 persons were killed and over 400 injured.