A renowned Massachusetts cardiologist who vanished during a Saturday morning bicycle ride was found dead the following day, according to authorities. Dr. Daniel Arnett, 44, disappeared after he was last seen riding in Newbury, as reported by The New York Post.

Arnett was last observed on his bicycle at about 10 a.m. Saturday. His body was discovered shortly after 2 p.m. the next day near the cow pasture at Tendercrop Farm.

The discovery brought a grim end to the effort to locate the missing doctor. Authorities had previously described Arnett as an “overdue cyclist” after he failed to return from the ride.

Mystery as top Boston cardiologist, 44, who's married dad-of-two is found dead after biking though quiet cow pasture 18 miles from his $2m home https://t.co/ae2krFkF2o

— Daily Mail (@DailyMail) November 10, 2026

Arnett had left without his cellphone, limiting the information available about his whereabouts. Police also did not know which route he planned to take while cycling.

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The Essex County District Attorney’s Office has not disclosed how Arnett died. Investigators, however, do not suspect foul play in the cardiologist’s death.

No cause of death was revealed in the information released by the district attorney’s office. The available account identified the location where Arnett was discovered but did not provide further details about what happened during his ride.

Arnett worked as a cardiologist with Lahey Health, according to Doximity. His areas of specialization included echocardiography, computed tomography, also known as CT, nuclear cardiology, and preventive cardiology.

He had practiced at Beth Israel Lahey Health since 2021. His medical career followed years of education and specialized training in internal medicine and cardiovascular disease.

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Arnett earned his MD in 2013 from the University of Colorado School of Medicine. He later completed his residency in internal medicine at the University of Washington.

His advanced medical training also included a fellowship in cardiovascular disease at the University of Utah. That background preceded his work at Beth Israel Lahey Health and his focus on several forms of cardiac testing and preventive care.

The timeline released by authorities begins with Arnett being seen around 10 a.m. Saturday. With no cellphone in his possession and no known cycling route, his location remained unknown until the following afternoon.

His body was eventually located near the Tendercrop Farm cow pasture. The discovery occurred shortly after 2 p.m., more than a day after he was last seen riding his bicycle in Newbury.

Authorities also reported that a second man was found dead Sunday afternoon in a neighboring town. Prosecutors said that death and Arnett’s case were unrelated.

The presence of two deaths in nearby communities did not indicate a connection between the cases, according to prosecutors. Investigators separately said they did not suspect foul play in Arnett’s death, while the district attorney’s office withheld the manner in which he died.

Arnett was 44 at the time of his death. His medical record, as described by Doximity, included his 2013 degree, residency at the University of Washington, fellowship at the University of Utah, and work at Beth Israel Lahey Health beginning in 2021.

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