The deceased, identified as Sukhdev Mehakarkar, was serving a three and a half years of the jail term in a kidnapping case, they said.
According to the jail authorities, the accused, Dinesh Dabade, who was convicted in a murder case, has been arrested under the IPC section of 302 (murder) by Yerawada police. He had been serving a life sentence in the previous murder case.
"The incident took place this morning near a barrack. Dabade allegedly hit Mehakarkar with a stone following a quarrel over a petty issue, in which he died on the spot," a senior jail official said.
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