A man whose heart stopped after a struggle with Long Beach police died from a heart attack or irregular heartbeat brought on by severe coronary artery disease that was likely exacerbated by drugs in his system, according to medical examiners.

The Los Angeles County Coroner’s office ruled 50-year-old Stephen R. Cherry’s death an accident, according to an autopsy report obtained by the Long Beach Post Monday.

Cherry died earlier this year when officers forcibly took him into custody, at one point using a Taser, at his Belmont Shore home, according to authorities.

Police and paramedics first headed to Cherry’s home in the 100 block of Santa Ana Avenue around 1:30 a.m. on Sept. 17 after getting calls about someone “breaking window glass and acting bizarrely,” according to the coroner’s report.

When police got there, they found him “slashing his arms against a glass window pane he had just broken out,” according to the coroner’s report.

Cherry resisted when officers tried to detain him, medical examiners wrote. At one point, an officer placed a Taser directly onto Cherry’s upper back and used it once, police told coroner’s investigators.

The Taser didn’t seem to have any effect, but police were soon able to take Cherry into custody, at which point he “became unresponsive,” according to the report.

Paramedics were already at the scene and took him to the hospital where doctors determined he was dead, investigators wrote.

The report doesn’t describe the Taser having any medical effect on Cherry or contributing to his death in any way.

It does note investigators found methamphetamine and diphenhydramine (an antihistamine) in his system.

“Methamphetamine is a stimulant drug, and it can increase the heart rate and blood pressure, thus increasing the work done, and oxygen needed, by the heart,” a medical examiner wrote.

Cherry’s sister told investigators that her brother didn’t abuse drugs or alcohol and was in good health, but the report notes he had a severe blockage in one of his coronary arteries. Blood loss from the cuts Cherry sustained during the incident also could have contributed to his death, “but this is felt to be a minor factor,” the report says.

Cherry’s sister told investigators that the bizarre behavior described by police was out of character by her brother, and she made sure coroner’s investigators knew officers used a Taser on Cherry, according to the report.

The autopsy report says there is video of the incident that shows a man, presumably Cherry, “exhibiting bizarre behavior and saying/shouting nonsensical statements.” It’s unclear where that video is from.

A relative of Cherry’s said Monday that the family would prefer not to comment on the situation.

Cherry isn’t the only person to die recently after Long Beach police used a Taser on him.

Police said 25-year-old Alan Alfredo Ramos died after officers Tasered him while he attacked another inmate in the Long Beach Jail on Nov. 11.

Authorities haven’t released his cause of death. Coroner’s officials are still waiting for results on a few tests including toxicology levels, according to LBPD spokeswoman Jennifer De Prez.

“Unfortunately no timeline as to when those will be completed is available at this time,” she said.

Editor’s note: This story was updated Tuesday morning with details from Long Beach police about why Ramos’ cause of death hasn’t yet been revealed.