JACKSONVILLE, Fla. — Authorities in Jacksonville Thursday announced the arrest of a retired merchant marine sailor in a 31-year-old cold case.

During a press conference, State Attorney Melissa Nelson announced the arrest of 52-year-old Michael Ziegler in connection to the 1994 murder of Tina Heins.

In 1994, Nelson said Tina was murdered and sexually assaulted. She was 20 years old, four months pregnant and newly married, Nelson said.

Just after 6 a.m. on April 17, 1994, police responded to Tina's apartment in Jacksonville's Mayport area, where they found her stabbed to death on her bed. Nelson said she had been stabbed 27 times.

Multiple areas of her apartment were set on fire afterward.

Nelson said Tina's brother-in-law, Chad Heins, was asleep in the living room of the apartment at t

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