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John Jonker, Sr.


On Wednesday, February 10, 2021, Firefighter John Jonker, Sr., participated in a training drill at the fire department.  Shortly after returning home, he collapsed from an apparent heart attack.  He was unable to be revived and passed away.

Fatality status is provisional and may change as USFA contacts State Fire Marshals to verify fatality incident information.

Department information

Erskine Lakes Fire Company #1
70 Mohawk Trail
Ringwood, New Jersey 07456

Chief: Christopher Delsasso

Age: 80
Rank: Firefighter
Classification: Volunteer
Incident date: February 10, 2021 10:58 p.m.
Date of death: February 10, 2021
Cause of death: Stress/Overexertion
Nature of death: Heart Attack
Activity type: Support
Emergency duty: No
Duty type: Training
Fixed property use: Store/Office

Last updated: February 16, 2021

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