By Associated Press - Thursday, May 10, 2018

BUFFALO, N.Y. (AP) - A New York man has pleaded not guilty to a jailhouse assault on his attorney while he was awaiting sentencing for attacking his ex-girlfriend with a sledgehammer.

Mark Dublino was arraigned on assault charges Wednesday in state Supreme Court in Buffalo. The 54-year-old is accused injuring defense attorney Joseph Terranova during a meeting in a locked room at the Erie County Holding Center in March.

If convicted, Dublino could receive a seven-year prison sentence.

He is already serving 107 years for the attempted murder of his ex-girlfriend, her elderly father and a friend.

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