A man reportedly walked into a Connecticut police department Thursday and confessed to stabbing a mother of two and respected businesswoman to death while she was jogging in 2014 — a case that has stumped investigators until now.

Melissa Millan, 54, was jogging on a popular trail in Simsbury on Nov. 20, 2014, when she was stabbed in the chest, police said. For four years, authorities worked to identify a suspect in the killing, but had no leads until last week.

A man walked into the police station with several members of his church and confessed to murdering Millan, Fox 61 reported. The man — who has not been identified because he hasn’t been charged — lived near where Millan was killed and is a registered sex offender for a conviction in another state, the report stated. He does not have a criminal record in Connecticut.

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Simsbury police are reviewing the man’s statement to match it with physical evidence at the crime scene. Police believe the attack was random, a source told the Hartford Courant, which broke the story.

Simsbury police chief did not confirm the report to Fox 61, but said authorities are still investigating Millan’s murder.

Millan was a top executive at Mass Mutual and was a mother to two children at the time of her death. Residents in the town were shocked by her death.

"I always feel safe. Simsbury is a very safe town. Very rarely anything noticeable happens," Reddy Ganta, a Simsbury resident, told Fox 61. "I came back and I found a photo there, flowers and candles, it has been there for about three years until a few months ago.”

In June 2015, an anonymous donor came forward and offered $40,000 for information leading to an arrest. Simsbury Police Chief Peter Ingvertsen said in a news release at the time that there were “some physical evidence from the crime scene” that will help identify a suspect.

Authorities announced last year that Simsbury police partnered with the state's cold case unit to solve Millan’s murder.