Police conduct a death investigation after a man and a woman were found unresponsive in a parked car before being pronounced dead in the area of South Coventry Court and Coventry Lane in Crystal Lake Tuesday morning. | Photo: Tracy Mathesius

Police say a 20-year-old woman and a 32-year-old man are dead after they were discovered unresponsive in a parked car in Crystal Lake Tuesday morning and there is no suspected danger to the public.

The Crystal Lake Fire Rescue Department and Crystal Lake Police Department responded around 5:32 a.m. Tuesday to the 700 block of Coventry Lane for a medical call.

Crystal Lake Deputy Police Chief Richard Neumann said a 911 caller reported two people possibly asleep in a vehicle parked on the roadway.

Police conduct a death investigation after a man and a woman were found unresponsive in a parked car before being pronounced dead in the area of South Coventry Court and Coventry Lane in Crystal Lake Tuesday morning. | Photo: Tracy Mathesius

Police officers arrived and reported finding a male and a female in a vehicle. Both were unconscious and not breathing.

Neumann said the approximately 20-year-old woman and the approximately 32-year-old man showed “no obvious signs of injury.”

Two ambulances and two fire engines were dispatched to the scene and officers began performing CPR on the victims.

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Police conduct a death investigation after a man and a woman were found unresponsive in a parked car before being pronounced dead in the area of South Coventry Court and Coventry Lane in Crystal Lake Tuesday morning. | Photo: Tracy Mathesius

Paramedics arrived and confirmed both victims were still unresponsive and took over lifesaving measures.

Lifesaving measures were unsuccessful and both were pronounced dead at the scene, Neumann said.

A heavy police presence was reported at the scene throughout the morning on Tuesday.

Police conduct a death investigation after a man and a woman were found unresponsive in a parked car before being pronounced dead in the area of South Coventry Court and Coventry Lane in Crystal Lake Tuesday morning. | Photo: Tracy Mathesius

Officers set up crime scene tape around the scene as they worked to investigate the incident.

The car involved was parked on South Coventry Court near Coventry Lane.

The McHenry County Coroner’s Office confirmed to Lake and McHenry County Scanner that they were called to the scene.

Police conduct a death investigation after a man and a woman were found unresponsive in a parked car before being pronounced dead in the area of South Coventry Court and Coventry Lane in Crystal Lake Tuesday morning. | Photo: Tracy Mathesius

The coroner’s office said they did not immediately have further details but said they expect to release additional information at a later time.

Neumann said investigators are still gathering evidence but are “confident” there is no danger to the public as a result of the incident.

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The victims’ identities are being withheld pending autopsies.

Police conduct a death investigation after a man and a woman were found unresponsive in a parked car before being pronounced dead in the area of South Coventry Court and Coventry Lane in Crystal Lake Tuesday morning. | Photo: Tracy Mathesius

The case remains under investigation and anyone with information is asked to contact the Crystal Lake Police Department at 815-356-3620.

Anonymous tips can also be submitted to the Crystal Lake Police Department by texting the word CLPDTIP along with the tip information to 847411.