A New York City man whose murder conviction was overturned after 23 years in prison has suffered a heart attack on his second day of freedom.

David Ranta's lawyer tells The New York Times the former inmate had a serious heart attack Friday night and is being treated at a New York hospital.

Ranta walked out of jail Thursday after a judge threw out his conviction in the 1990 killing of a Brooklyn rabbi.

Brooklyn prosecutors had recently concluded Ranta's prosecution in the death of Rabbi Chaskel Werzberger was fatally flawed.

Werzberger was killed by a bandit fleeing a botched robbery. One witness said a police lineup that helped convict Ranta had been rigged.

Ranta is 58. He told reporters Thursday that his new freedom was emotionally overwhelming.

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