Caoimhin Cassidy had not been seriously injured in car crash in June 2019, police have said.
Shortly after 4am on Saturday, 1st June, 2019, emergency services responded to the report of a Red Mazda 6 car on fire on Fairview Road in Galliagh in the city.
It was when dealing with the blaze that the body of 18-year-old Caoimhin Cassidy was discovered inside the vehicle.
A post mortem examination determined Caoimhin was not seriously injured as a result of a crash, and was most likely still alive when the blaze started.
Earlier today, detectives arrested a 28-year-old man on suspicion of manslaughter and he is being questioned by detectives at Musgrave’s Serious Crime Suite.
As part of their investigation, detectives also carried out a search at an address in the Galliagh area today.
Last month, a 31-year-old man was arrested, also on suspicion of manslaughter, and was later released unconditionally.
Detective Inspector Michael Winters is the Senior Investigating Officer leading enquiries into Caoimhin’s death.
Detective Inspector Winters said: “It is three years since Caoimhin died, and our investigation into what happened continues.
“We believe Caoimhin was not travelling alone in the red Mazda, that other people were with him.
“On that basis, we believe there are people within the community who can help us with our investigation.
Caoimhin Cassidy’s body was found inside the Mazda 6 car in the Galliagh area of Derry on June 1, 2019
The number to call detectives on is 101, quoting reference number 316 of 01/06/19.
Alternatively, you can submit a report online using our non-emergency reporting form via http://www.psni.police.uk/makeareport/
You can also call Crimestoppers anonymously on 0800 555 111 or online at http://crimestoppers-uk.org/
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